This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 edition. Excerpt: ...and especially where it is beaded (Stentor, Spirostomum, etc.). As a rule the micronuclei are closely attached to the membrane of the macron ucleus, occupying a minute indentation in the latter, but in some cases they are well separated. In form they are round, ellipsoidal, or spindleshaped, but the ...
Read More
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1901 edition. Excerpt: ...and especially where it is beaded (Stentor, Spirostomum, etc.). As a rule the micronuclei are closely attached to the membrane of the macron ucleus, occupying a minute indentation in the latter, but in some cases they are well separated. In form they are round, ellipsoidal, or spindleshaped, but the form varies with the nuclear activity, and docs not mean much in itself. Their longest axis measures from 1 n to 10 fi, and like the macronuclei, they are covered with a distinct membrane, while the chromatin is usually massed at some part of the nucleus. In certain cases the appearance is like that of the macronucleus with the chromatin in the form of a densely packed reticulum, giving to it a massive appearance. Here two distinct portions, the chromatin and achromatin, can be made out (Fig. 105). Division of the nuclei takes place by mitosis in the micronuclei, and, as a rule, by amitosis in the macronuclei. The latter is the simpler; in many spherical or elliptical nuclei the structure merely draws out and segments into two equal parts. It is more or less complicated, however, in different macronuclei, until well-developed mitosis replaces simple division (e.g. Spirochona). There is reason to regard the simple division of the larger nuclei as the mere degeneration of mitosis, by a process in which the various stages have gradually disappeared until only the preliminary stages of such division are to be found. These preliminary stages are seen in the transformation of the reticulum of chromatin into thread-like masses, which recall the spireme of Fig. 104.--Loxophyllum mcleagris O. F. M. BALB1ANI. A. Vegetative nuclei with chromatin in the form of a permanent spireme. IS, C, I). The same in division. Fig. 105.--Mitotic division of the nuclei...
Read Less
Add this copy of The Protozoa to cart. $53.08, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2009 by BiblioBazaar.
Add this copy of The Protozoa to cart. $59.01, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2010 by Kessinger Publishing.
Add this copy of The Protozoa to cart. $59.18, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2007 by Kessinger Publishing.
Add this copy of The Protozoa to cart. $61.07, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2010 by Kessinger Publishing.
Add this copy of The Protozoa to cart. $61.07, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2007 by Kessinger Publishing.
Add this copy of The Protozoa to cart. $65.65, good condition, Sold by Midtown Scholar Bookstore rated 5.0 out of 5 stars, ships from Harrisburg, PA, UNITED STATES, published 1910 by MacMillan.
Add this copy of The Protozoa to cart. $75.32, new condition, Sold by Booksplease rated 4.0 out of 5 stars, ships from Southport, MERSEYSIDE, UNITED KINGDOM, published 2007 by Kessinger Publishing.
Add this copy of The Protozoa to cart. $77.07, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2007 by Kessinger Publishing.
Add this copy of The Protozoa to cart. $97.09, like new condition, Sold by Phatpocket Limited rated 4.0 out of 5 stars, ships from Waltham Abbey, ESSEX, UNITED KINGDOM, published 2013 by Rarebooksclub.com.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
Like New. Used-Like New. Book is new and unread but may have minor shelf wear. Ships from UK in 48 hours or less (usually same day). Your purchase helps support Sri Lankan Children's Charity 'The Rainbow Centre'. 100% money back guarantee. We are a world class secondhand bookstore based in Hertfordshire, United Kingdom and specialize in high quality textbooks across an enormous variety of subjects. We aim to provide a vast range of textbooks, rare and collectible books at a great price. Our donations to The Rainbow Centre have helped provide an education and a safe haven to hundreds of children who live in appalling conditions. We provide a 100% money back guarantee and are dedicated to providing our customers with the highest standards of service in the bookselling industry.