V. Contributions to the study of the bionomics and reproductive processes of the foraminifera. 1
The protozoologist who devotes himself to the study of the Testaceous Sarcodina 1 enters upon a task which is beset with difficulties which are, to a significant degree, insuperable. It is not so much the minuteness of the objects under consideration which is responsible for these difficulties, for,...
Published in: | Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
The Royal Society
1915
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1098/rstb.1915.0005 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1915.0005 |
id |
crroyalsociety:10.1098/rstb.1915.0005 |
---|---|
record_format |
openpolar |
spelling |
crroyalsociety:10.1098/rstb.1915.0005 2024-09-15T18:06:54+00:00 V. Contributions to the study of the bionomics and reproductive processes of the foraminifera. 1 1915 http://dx.doi.org/10.1098/rstb.1915.0005 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1915.0005 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character volume 206, issue 325-334, page 227-279 ISSN 0264-3960 2053-9266 journal-article 1915 crroyalsociety https://doi.org/10.1098/rstb.1915.0005 2024-07-29T04:23:20Z The protozoologist who devotes himself to the study of the Testaceous Sarcodina 1 enters upon a task which is beset with difficulties which are, to a significant degree, insuperable. It is not so much the minuteness of the objects under consideration which is responsible for these difficulties, for, in the present and ever-advancing state of perfection of microscopical apparatus for the facilitation of technique, this is a difficulty which is more or less easily overcome. The mechanical difficulties are presented by the shell, which distinguishes the Foraminifera proper, the external skeleton of the organisms, which, whether they are calcareous, or whether they are arenaceous, that is to say, whether their shells consist of carbonate of lime separated from the surrounding media by some mysterious function of the protoplasm, or whether they are built together of fortuitous or selected materials, cemented together by a substance secreted by the organism, renders the examination of the living animal and the study of its life-history a task to which very definite limits are set. An examination, in the vast majority of species, of the nuclear conditions and changes can only be carried out upon individuals which are dead, and, at best, have been preserved in some recognised fluid (such as Schaudinn’s), the precise nature of the effect of which upon the dead protoplasmic body it is impossible accurately to calculate. The geographical difficulty is almost equally great, for many of the largest, and many, if we may use the word, of the “idiosyncratic” forms, are tropical species, having intimate relationships with species inhabiting temperate or even Arctic zones, and it becomes a physical impossibility to examine and compare these organisms alive, regard being had to the fact that to arrive at any satisfactory conclusions the observer must be on the spot to examine the animal when freshly gathered from the littoral zones, or dredged from considerable depths. In the latter case, it is unnecessary to advert to the ... Article in Journal/Newspaper Foraminifera* The Royal Society Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character 206 325-334 227 279 |
institution |
Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
The protozoologist who devotes himself to the study of the Testaceous Sarcodina 1 enters upon a task which is beset with difficulties which are, to a significant degree, insuperable. It is not so much the minuteness of the objects under consideration which is responsible for these difficulties, for, in the present and ever-advancing state of perfection of microscopical apparatus for the facilitation of technique, this is a difficulty which is more or less easily overcome. The mechanical difficulties are presented by the shell, which distinguishes the Foraminifera proper, the external skeleton of the organisms, which, whether they are calcareous, or whether they are arenaceous, that is to say, whether their shells consist of carbonate of lime separated from the surrounding media by some mysterious function of the protoplasm, or whether they are built together of fortuitous or selected materials, cemented together by a substance secreted by the organism, renders the examination of the living animal and the study of its life-history a task to which very definite limits are set. An examination, in the vast majority of species, of the nuclear conditions and changes can only be carried out upon individuals which are dead, and, at best, have been preserved in some recognised fluid (such as Schaudinn’s), the precise nature of the effect of which upon the dead protoplasmic body it is impossible accurately to calculate. The geographical difficulty is almost equally great, for many of the largest, and many, if we may use the word, of the “idiosyncratic” forms, are tropical species, having intimate relationships with species inhabiting temperate or even Arctic zones, and it becomes a physical impossibility to examine and compare these organisms alive, regard being had to the fact that to arrive at any satisfactory conclusions the observer must be on the spot to examine the animal when freshly gathered from the littoral zones, or dredged from considerable depths. In the latter case, it is unnecessary to advert to the ... |
format |
Article in Journal/Newspaper |
title |
V. Contributions to the study of the bionomics and reproductive processes of the foraminifera. 1 |
spellingShingle |
V. Contributions to the study of the bionomics and reproductive processes of the foraminifera. 1 |
title_short |
V. Contributions to the study of the bionomics and reproductive processes of the foraminifera. 1 |
title_full |
V. Contributions to the study of the bionomics and reproductive processes of the foraminifera. 1 |
title_fullStr |
V. Contributions to the study of the bionomics and reproductive processes of the foraminifera. 1 |
title_full_unstemmed |
V. Contributions to the study of the bionomics and reproductive processes of the foraminifera. 1 |
title_sort |
v. contributions to the study of the bionomics and reproductive processes of the foraminifera. 1 |
publisher |
The Royal Society |
publishDate |
1915 |
url |
http://dx.doi.org/10.1098/rstb.1915.0005 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1915.0005 |
genre |
Foraminifera* |
genre_facet |
Foraminifera* |
op_source |
Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character volume 206, issue 325-334, page 227-279 ISSN 0264-3960 2053-9266 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rstb.1915.0005 |
container_title |
Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character |
container_volume |
206 |
container_issue |
325-334 |
container_start_page |
227 |
op_container_end_page |
279 |
_version_ |
1810444250679083008 |