English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

are brought to bear upon the diverse circumstances under which life is carried on in the various animals. Merely to investigate the structure and organization of a number of unknown species, gains much for physiology. To learn their natural history?their habits, their climate, their food?adds still more, by vivifying (as it were) that anatomical knowledge which is, perhaps, always more living than its subject-matter would suggest. But to trace by chemical research the nature and amount of those changes that constitute the physical life of the animal, gives a third and complementary means of inquiry, which may almost be said to exhaust our methods of research, and to restrict all future inquiry to the inexhaustible (but narrower) objects of amplifying and correcting the information derived from these three

Investigations, chemical and physiological, relative to certain American Vertebrata