I860.] Proceedings of the Asiatic Society of Bengal. 85 



This peculiar power of vegetables was strikingly and instructively de- 

 monstrated to us in an aquarium ; put fish in an aquarium and they 

 soon die, though they may be well fed, if the water is not renewed, 

 and this mortality arises from want of oxygen ; but put a water plant 

 in the aquarium and the fish will live for days weeks and months with- 

 out the water being changed, and this arises from the peculiar power 

 the vegetable possesses of decomposing carbonic acid, appropriating the 

 carbon to its own life and giving off oxygen for the support of the life 

 of the fish. 



Mr. Jones and Dr. Crozier then exhibited numerous specimens of 

 Diatomaeeas, Several members of the society having obligingly lent 

 their microscopes for the occasion. 



The cordial thanks of the meeting were voted to Mr. Jones and 

 Dr. Crozier. 



The Officiating Librarian submitted the usual monthly report. 



Library. 



The Library had received the following accessions since the meeting in 

 February last. 



Presentations. 



Journal of the Academy of Natural Sciences of Philadelphia, New Series, 

 vol. 4th, Part 2nd. — By the Academy. 



Proceedings of the Academy of Natural Sciences of Philadelphia, 

 1859. — By the Academy. 



Description of some Asiatic Lepidopterous Insects belonging to the tribe 

 Bombyces. — By Frederic Moore. (From the proceedings of the Zoologi- 

 cal Society of London, May 1859.) — By the Author. 



A Monograph of the Genus Adolias. — By Frederic Moore. (From the 

 Trans. Ent. Society vol. 5, N. S., Part 2nd). — By the Author. 



Synopsis of the known Asiatic species of Silk-producing Moths with 

 descriptions of some new species from India, 2 copies. — By Frederic 

 Moore. (From the proceedings of the Zoological Society of London, June 

 1859. — By the Author. 



The Quarterly Journal of the Geological Society, vol. 15, Part 4, No. 60. 

 — By the Editor. 



Journal of the Statistical Society of London, vol. 22, Part 4. — By the 

 Society. 



Proceedings of the Royal Geographical Society of London, vol. 3, No. 6. 

 — By the Society. 



