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Excerpt from The American Monthly Microscopical Journal, Vol. 2 Editorial - 13, 34, 54, 73, 93, 151, 177, 192, 214, 233 Epidermal Organs of Plants C F. Cox 103, 125 Erector, A Home-made 92 Exchanges 172 Extract from Le Microscope 10 Eye-piece, Abbe Binocular 207, 234 Eye-pieces 214. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from The American Monthly Microscopical Journal, Vol. 14: Containing Contributions to Biology; For 1893 The scientific study of zoology takes a somewhat thorough study of some animal form as a point of departure toward the study of other animals. And the studies then become comparative. After having become familiar with the grasshopper. It will be of advantage for the student of the subject to compare the grass hopper. At least as far as regards the outward plan and subdi vision of the body. With other familiar animals which are similar enough to permit comparisons. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from The American Monthly Microscopical Journal, Vol. 5 After a life of constant activity and conscientious devotion to his work, Mr. Tolles has left behind him noth ing but well-earned fame. His mem ory will live fresh in the thoughts of all who knew him, and after the pres ent generation has passed away there will still be the results of his earnest, thoughtful life to make his fame eu dure. His has been a life worth liv ing, and we trust his reward is great. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from The American Monthly Microscopical Journal, Vol. 1 The American Monthly Microscopical Journal, 1880 was written by an unknown author in 1880. This is a 247 page book, containing 139245 words and 30 pictures. Search Inside is enabled for this title. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from The American Monthly Microscopical Journal, Vol. 10: Containing Contributions to Biology Cover each tumbler with paper to keep out dust but to let in air. Put them away, a set of three in a moist dark place, a set of three in a moist light place. In the pure water, whether in the dark or the light place, two or three days will have produced no change. In the syrup or the cake, from both places, spots of green will have appeared upon the surface. Therefore, mould grows in the dark as well as in the light, and will not grow in water containing no organic matter. In similar ways it may be shown that mould grows well on meat broth and other watery media; that it grows faster in warm places and slower in cold places. 2. Examination with Low Power. - Upon the tip of a needle catch the smallest possible speck of mould, add a drop of water, cover it and place under the low power. There will perhaps appear some very fine threads, but mainly a great dimness with some very dark curved lines. This mount is a failure, proving that water is not a universal mounting medium. That might have been suspected from the water not moistening the film when first tried. Begin again with the needle, and now use alcohol upon the slide. When viewed under the microscope it will appear that the mould is made up of fibres matted together. These will show still better under the high powers. Before using them, mount a new slide in alcohol, carefully teasing the speck of mould before covering it. To tease it, take a needle in each hand, hold down the speck with one needle and pull the mould away with the other one. This separates the fibres for easier inspection. As the alcohol evaporates rapidly meanwhile, some more must be added from time to time, getting it under the cover with a pipette. 3. Under High Power. - The teased speck now appears to be a great complex of fine wavy threads. They make up the large part of the mould, and are called Hyphae (webs) because of their being matted and woven together. These are of two kinds: - (1.) which run indefinitely, many having no cross partitions; (2) which are broken by transverse joints and which terminate in branches tipped with small spheres. Besides these two kinds of hyphae numerous small spheres called conidia will be found in the mount. The hyphae Sand conidia together constitute the mould. The next question is, how are they put together. If a mould growing on a fluid-like broth be carefully examined one can see that it consists of a coat or scum which floats on the fluid, and that from this, called the mycelium hyphae carrying the dust before noticed are borne aloft into the air. These are invisible to the naked eye, but careful examination of bits caught with the needle from such a film convinces you that there are two kinds of hyphae, those of the mycelium and others arising from them into the air. 4. The Mycelial Hyphae. - A single thread from the complex, under medium power, is illustrated in figure i of the plate. Observe the long and narrow, flexuous, and parallel-sided thread or hyphae; that it branches frequently; that these branches are of equal diameter with the main stem; that the stem is not empty but contains something, and that the stem is one continuous tube through all its length and not broken by subdividing cross-walls. The older mycelial hyphae are not one single tube, but, like the aerial hyphae, are transversely divided. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com"
Excerpt from The American Monthly Microscopical Journal, 1884, Vol. 5 Remittances should be made by postal notes, money orders, or by money sent in registered letters. Drafts should be made payable in Washington, New York, Boston, or Philadelphia. Subscription-price before April Ist, $1 per year, in advance. All subscriptions begin with the January number. After April Ist the subscription price will be o. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from The American Monthly Microscopical Journal, 1886, Vol. 7 Obelisk In Central Park, destruction of 37 Objective, a new, H. R. Spencer Co. -57 and ocular, new 1 76 Objectives and oculars, the new 88 appochromatic, and eye-pieces 214 appochromatic, C. Zeiss 231 recent improvement in micro scopic, Romyn Hitchcock 190 the benefits of improvements in. 173 Objects for mounting 18 Oculars, the new objectives and 88 appochromatic objectives and eye-pieces 214 Parasite of porcellio, a, W. F. Durand 161 Parasites in domestic fowls, internal. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from The American Monthly Microscopical Journal, Vol. 21: For 1900 It is now some five years since I first began to make experiments with a view to finding out how it might be possible, without staining, to cause an object and its background to appear of different colors, and so secure a greater contrast than usual. Up to the present I have found three different ways by which we can make uncolored objects assume any color we wish, and our background any other color. In many circumstances we can also make definite parts of objects themselves assume different colors - if so desired. These effects may be produced so simply that any amateur may make many of the experiments himself at the cost of a few cents. In all microscopes fitted with a condenser in the substage, there is, underneath the condenser lenses, a ring or some form of holder to take stops for dark-ground illumination. Now let us cut out a disc of red gelatine (such as is used for crackers) to fit this ring, then punch a hole in the centre about a third of its diameter, and stick over the hole a piece of blue gelatine of the same size (fig. la). Then we place this color disc in the holder under the condenser, and use it in the same way as we would use the dark-ground stop. We will suppose we are using a 1" objective. The result to those who have not seen it before will be astonishing. The objects, for instance a slide of Polycystina, or some living Rotifers, will appear perfectly red, and the background perfectly blue. The great contrast throws the objects up in a most striking manner. Of course, if we wish to vary our colors, all we have to do is to vary the colors of the gelatine; a yellow disc with a blue centre will show the objects yellow on a blue ground, an uncolored disc with a green centre (fig, 1 b) will show the object white or whatever may be its natural color on a green background, and so forth. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from The American Monthly Microscopical Journal, Vol. 12: Containing Contributions to Biology, for 1891 Nor do the valves separate along the raphe or median line, but along the line of junction or suture. If the reader will turn over a page or two to the conspectus, he will see it stated by H. L. Smith, of Tribe I, Raphidieae, for example: "Frustules, mostly bacillar in s. v., always with a distinct raphe on one or both valves." (Italics mine.) Thus the two statements do not agree, and that on p. x will be likely to give the student a very different idea of what is meant by the raphe. But to return to our article. The trouble has all come, in my opinion, from calling the inner portion of the valve a hoop at all. For it suggests at once a barrel-hoop, something which is free at both edges from that which it encloses; which is not usually the case with the diatom hoop, to say the least. It is a misleading term, and is bound to confuse the student. It would be much better, therefore, it seems to me, to drop it altogether, or to speak of this piece as that portion of the membrane of each valve which when separated from the valve has the shape of a hoop. For as long as it is attached to the valve it is not a hoop, but the continuation of the valve itself. Finding this portion, however, at times detached, and shaped like a hoop, observers have thought there was only one hoop to each frustule, and that it bound the two valves together, whereas the truth is that there is a so-called hoop to each valve, and the hoops found in settlings of the Diatomaceae did not come each from a frustule but each from a valve, that is, two from each frustule. (There may be a few exceptions, but in my opinion the above will hold as a general statement.) Now, I am inclined to believe that very few amateurs have had the occular demonstration of this fact. Having to write upon the subject, and finding it impossible to reconcile the figures with what Carpenter said, I went to my slides again, and with the binocular, and almost the first peep at Isthmia showed me that the drawings were faulty in representing the upper and lower edges of the two valves as continuous lines instead of broken ones. And then I took down Schmidt's plates and the whole thing was as clear as day. And my advice to the student is to do the same thing: to pick out all his slides of Isthmia, Biddulphia, and Triceratium, and using the binocular, look sharp at the upper and lower edges of the hoop, and he will soon see that each is not one continuous line, but is formed by two lines, one of which is inside the other. And then if he is fortunate he will find some frustules where the valves have partly separated, and he will find that each valve has its band or hoop, and that it forms one continuous piece with the valve. And when he has done this he will have done something that is better than resolving Amphipleura, for he will have gained a definite idea of the structure of the diatom frustule. And this is a point that cannot be too strongly insisted upon, since even the Micrographic Dictionary has gone through edition after edition without stating or figuring the matter correctly. The first thing then for the student to do is to get a correct idea of the way the two valves are put together, and to do this he must not rely upon the figures in the Micrographic or in Carpenter, but study carefully the actual diatoms with the binocular. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com"
Excerpt from The American Monthly Microscopical Journal, Vol. 20: For, 1899 The first object to be recorded in this article is a variation of Coscinodiscus asteromphalus (fig. 1). Instead of the well-known pattern consisting of a ring of larger areolations surrounding the finely perforated membrane which covers a large polygonal cell, we have a circular ring of brackets projecting inwards to strengthen this delicate membrane or cover. The perforations in the centre of this membrane are excessively minute, and those round it are far more minute than those in an ordinary asteromphalus. These brackets are very similar in appearance to those supporting the delicate auditory membrane in the pygidium of a flea. The second point to record is the discovery of a tertiary structute in an asteromphalus of the common form (fig.8). This tertiary structure must be looked for in the interior of those secondaries which encircle the finely perforated membrane. It is hardly necessary to say that these tertiaries are excessively minute. In form they are not unlike the secondaries of Asterolampra vulgaris. This is a difficult image, not only on account of its minuteness, but because of its liability to be merely an interference image. There are certain minute microscopic images which, although difficult to see, are nevertheless undoubtedly true, for by no known method could they have been caused by interference. There are, on the other hand, some comparatively large microscopic images, which are so likely to have been caused by interference that, apart from some special proof, they cannot be regarded as true. The Systephania diadema (Stephanopyxis corona), may be cited as an example of this latter class of objects. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.