The Kansas University Science Bulletin, Vol. I, No. 2, February, 1902

The Kansas University Science Bulletin, Vol. I, No. 2, February, 1902

The Kansas University Science Bulletin, Vol. I, No. 2, February, 1902It is the object of these studies...
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The Kansas University Science Bulletin, Vol. I, No. 2, February, 1902

The Kansas University Science Bulletin, Vol. I, No. 2, February, 1902

$19.99 $9.99

The Kansas University Science Bulletin, Vol. I, No. 2, February, 1902

$19.99 $9.99
Author: Various
Format: eBook
Language: English

The Kansas University Science Bulletin, Vol. I, No. 2, February, 1902

It is the object of these studies to follow carefully the spermatid transformations, and, if possible, to get a complete series of changes occurring therein. I do not pretend that I have as yet found all the stages, but in the present paper will publish observations made on Gryllus assimilis pertaining chiefly to the nebenkern, of which I have found some stages not previously described, as far as I know. I shall first describe my own findings, and then compare them with the results of others. While other fixing agents were used, Flemmings chromo-acetic-osmic mixture (strong) proved the best. Its fixation was satisfactory in all but a few stages, where the chemical changes going on in the cell are such that it seems difficult, probably impossible, to secure good, clear results; at least, neither Gilsons nor Zenkers mixture did any better on cells in these stages. [48] The first observations were made in January of the present year on some material prepared by Professor McClung, to whom I wish here to make most grateful acknowledgment for proposing the line of investigation, and for many helpful suggestions during the progress of the same. The testes were those of adult insects, and showed mostly only mature or almost mature spermatozoa. Enough spermatids were seen to indicate that their transformation into spermatozoa was somewhat peculiar. ......Buy Now (To Read More)

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Ebook Number: 54868
Author: Various
Release Date: Jun 8, 2017
Format: eBook
Language: English

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