Archiv Für Protistenkunde, 1904, Vol. 3 (Classic Reprint) PDF Download
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Author: Fritz Schaudinn
Publisher: Forgotten Books
ISBN: 9780483292109
Category : Science
Languages : en
Pages : 458
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Book Description
Excerpt from Archiv Für Protistenkunde, 1904, Vol. 3 A single micronucleus occupies a somewhat isolated position at the base of the attachment cup, to the left of the larger neck fibre (figs. 3 and 16; '01, Fig. 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.
Author: Fritz Schaudinn
Publisher: Forgotten Books
ISBN: 9780483292109
Category : Science
Languages : en
Pages : 458
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Book Description
Excerpt from Archiv Für Protistenkunde, 1904, Vol. 3 A single micronucleus occupies a somewhat isolated position at the base of the attachment cup, to the left of the larger neck fibre (figs. 3 and 16; '01, Fig. 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.
Author: Anonymous
Publisher: Rarebooksclub.com
ISBN: 9781230120867
Category :
Languages : en
Pages : 152
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Book Description
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. 1909 edition. Excerpt: ...die Kernreduktion besser zustande kam. Mehrmals wurde sogar eine energische Kernausstossung beobachtet. Dennoch blieb die Zahl der unresorbierten Kerne auch hier noch zu hoch und demzufolge bildeten sich zahlreichere und kleinere Oysten, als unter normalen Bedingungen. Die Kernplasmarelation war also in beiden Parallelkulturen abgeandert und zwar in der Kalte infolge der langdauernden Funktion und der Kalteeinwirkung, in der Warme nur durch erstere. Es treten dadurch ganz ahnliche Erscheinungen bei der Encystierung in der Warme wie in der Kalte auf. So erklart sich auch die Tatsache, dass wir in den Parallelkulturen von Nr. 5 und Nr. 6 einer Reihe Erscheinungen begegnen, welche stufenweise ineinander ubergehen, anfangend in der Warmekultur Nr. 5, sich fortsetzend in der parallelen Kaltekultur und endend in der Warmekultur Nr. 6. In der am 26. Januar ausgesetzten Kultur Nr. 5 konnte man feststellen, dass der Verlauf der Encystierung in der Warme infolge der energischen Kernreduktion (durch Ausstossung) sehr gut war. Die anfangs abgeanderte Kernplasmarelation wurde durch die Warme normalisiert. Das ist die erste Stufe. Die zweite Stufe trat in derselben Kultur in der Kalte ein. Das uberflussige Kerumaterial konnte hier nicht verarbeitet werden, und wirkte hemmend auf die Encystierung. Bei den wenigen Cysten, die sich bildeten. stieg die Zahl der Primarcysten zu ungekannteiHohe. Diese selbst waren fast unglaublich klein, wahrend die Kenigrosse normal war. Die Kernplasmarelation war hier zugunsten des Kernes abgeandert. Ungefahr eine Woche spater wurde die nachste Kultur angesetzt. Hier war
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ISBN:
Category : Protozoa
Languages : en
Pages : 344
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Author: M. Hartmann
Publisher: Forgotten Books
ISBN: 9780266880394
Category : Science
Languages : en
Pages : 394
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Excerpt from Archiv Für Protistenkunde, 1909, Vol. 13: Mit 28 Tafeln Und 40 d104figuren The cysts are always free in the crop contents and are exactly similar to those found in the faeces. They are either oval, round or pear shaped bodies (plate I Fig. 1) measuring from p to 4 p in length and from 2 p to a in breadth. Their protoplasm stains a delicate blue with Romanowsky's stain and light pink with Giemsa's and when highly magnified is seen to consist of a delicate reticulum which in parts is finely vacuolated. The parasites are clearly outlined by a condensed layer of protoplasm, the periplast, which stains deep blue with Romanowsky's stain but pink with Giemsa's. The nucleus, nearly always at the rounder end Of the parasite, is a compact mass staining deep pink and measuring about 1 a in diameter; it may be circular or more commonly kidney-shaped with the concavity directed towards the centre of the cell. When highly magnified it is seen to contain four chromosomes, this number however is not always constant as very often only two can be distinctly seen; many of the nuclei show a central pale area, while the margin stains much darker probably owing to the chromosomes occupying the periphery. In specimens deeply stained by Giemsa's stain and subsequently decolorised the recticulated nucleus appears to be surrounded by a distinct membrane (plate I Fig. The blepharoplast, about one third the size of the nucleus, is almost always circular in shape and stains deep magenta with Romanowsky's and Giemsa's stains. It is as a rule situated about the centre of the parasite but may be displaced to either side. Owing to its small size and great avidity for the stain it is not possible in ordinary specimens to demonstrate any inner structure but in ruptured cells it is seen to contain (under a magnification of 2700 diameters) a small chromatic dot; in some Specimens it had the appearance of a small ring. There was no other structure visible in the cysts. 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.
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ISBN:
Category : Protista
Languages : de
Pages : 434
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Author: M.W. Dick
Publisher: Springer Science & Business Media
ISBN: 9401597332
Category : Science
Languages : en
Pages : 668
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Book Description
Straminipilous Fungi presents a critical comparative review of the morphology and ultrastructure, morphogenesis, cytology, molecular biology and evolution of the biflagellate fungi. These organisms encompass the fungi formerly called oomycetes; taxonomically related heterotrophs studied by mycologists; plasmodiophorids and other heterotrophs. Appropriate comparisons are made with chromophyte algae, marine heterotrophs and chytridiaceous fungi. Little-known taxa which have been referred to the various orders of flagellate fungi are also listed together with citations. A new hierarchical classification is presented which is supported by systematic accounts and synoptic keys. Dichotomous keys based on habitat and habit are given to all known species of lagenidiaceous fungi, labyrinthulids and plasmodiophorids. A unique `one stop' reference resource for plant pathologists is provided by the binominal lists, including host-related lists for the downy mildews. The book, including ca 4000 references, is a major text for post-graduate and research workers, particularly freshwater and marine biologists, soil ecologists and plant pathologists.
Author: Denis Lynn
Publisher: Springer Science & Business Media
ISBN: 1402082398
Category : Science
Languages : en
Pages : 627
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Book Description
distances between groups of ciliates were as vast as significant hurdles to obtain copyright permissions the genetic distances between plants and animals for the over 1,000 required illustrations, and I put – THE major eukaryotic kingdoms at that time! the publication schedule ahead of this element. I continued to collaborate with Mitch, and in There are a number of significant illustrated guides 1991 my first “molecular” Magisterial student, to genera and species that have recently been pub- Spencer Greenwood, published an article estab- lished. References are made to these throughout lishing 1990 or thereabouts as the beginning of the book as sources that readers can consult for this the “Age of Refinement” – the period when gene aspect of ciliate diversity. A future project that I am sequencing techniques would deepen our under- contemplating is an illustrated guide to all the valid standing of the major lines of evolution within ciliate genera.
Author: John D. Wehr
Publisher: Elsevier
ISBN: 0080521886
Category : Science
Languages : en
Pages : 935
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Book Description
Freshwater algae are among the most diverse and ubiquitous organisms on earth. They occupy an enormous range of ecological conditions from lakes and rivers to acidic peat swamps, inland saline lakes, snow and ice, damp soils, wetlands, desert soils, wastewater treatment plants, and are symbionts in and on many plants, fungi, and animals. In North America, the variety of freshwater habitats colonized by algae is very rich, and offers an enormous and fascinating range of environments for their study. They form the base of most aquatic food webs and are critical to studies of ecosystem health. Algal ecologists and taxonomists play an important role in the understanding of aquatic ecosystems: their biodiversity, productivity, interactions with other organisms, and water quality. This book provides in one volume a practical and comprehensive guide to the genera of freshwater algae known from North America. The format combines the necessary ecological, taxonomic and methodological information for all scientists working in aquatic environments, whether their specialty is in environmental monitoring and water quality assessment, biological composition, ecology, evolution, or molecular biology.Key Features* The first complete accounting of North America's freshwater algal genera in more than 50 years* Includes a guide to the current literature on species identification in each group of algae* High-quality photographs and drawings of more than 770 genera* A clear, easy-to-use introductory key to the diagnostic chapters* Synthetic chapters on freshwater habitats, use of algae in environmental assessment, and control of nuisance algae* Contributions from 27 experts in all areas of freshwater algae* Extensive literature citations* Companion volume of Ecology and Classification of North American Freshwater Invertebrates 2nd edition, edited by Throp and Covich
Author:
Publisher:
ISBN:
Category : Morphology
Languages : en
Pages : 620
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Author: David J. Patterson
Publisher: CRC Press
ISBN: 1840765844
Category : Nature
Languages : en
Pages : 224
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Book Description
Protozoa may be found in almost every aquatic habitat, each containing dozens of species. The diversity can provide invaluable insights into the nature of the habitat. Protozoa can thus be used to illustrate biological principles. This colour guide makes the identification of individual protozoa easily accessible to students and professionals and p
