cover image: Journal & Proceedings of the Asiatic Society of Bengal  February 1912

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Journal & Proceedings of the Asiatic Society of Bengal February 1912

1912

Different specit's of Temnocephala live in different countries on the gills of cray-fish on the external surface of tortoises in the respiratory chambers of large pond-snails and on the lower surface of freshwater crabs. [...] It was long thought that in tropical countries the same phenomena occurred in the matter of seasonal changes in the life-cycle as in temperate climates but that the peculiar bodies were produced at the beginning of the hot weather instead of the beginning of winter and that this was due directly to the desiccation of ponds and lakes. [...] A large proportion of the lower invertebrates of fresh water undergo in Lower Bengal the same change that occurs in the same species or in allied forms in Europe and the crisis does take place at the begining of the hot weather. [...] There are however a considerable number of simply organized aquatic animals which in this country undergo the annual crisis in their life-cycle not at the beginning of the hot weather but at the beginning or during the course of the dry that is to say the cold weather. [...] They are obliged to prtect themselves from desiccation but it is possible that the actual cause of the change in their case also is a rise in the temperature of the water for in India even the winter sun is sufficiently powerful to heat up small masses of water such as are left in the beds of drying tanks.
history
Pages
122
Published in
India
SARF Document ID
sarf.120250
Segment Pages Author Actions
Cover
i-i unknown view
Frontmatter
i-i unknown view
2. Some Recent Advances in Our Knowledge of the Freshwater Fauna of India. (A Lecture Delivered Before the Asiatic Society of Bengal on the Evening of March 27th 1912.)
39-54 N. Annandale view
3. Cavalry in the Rgvedic Age
55-56 Surendra Mazumdar view
4. A Note on Kāśikā
57-58 Surendra Mazumdar view
5. The Author of the Bhattikavya
59-61 Surendra Mazumdar view
Feb-12
vii-ci unknown view
Backmatter
i-ii unknown view

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