Mutter's Archivfur Anatomie, Sfc. 137 



of the bleak, on the contrary, will only eat vegetable matter, at least 

 during this early period of their existence. The temperature of the 

 room in which these experiments were carried on, ranged from 72° to 

 77° Fahrenheit. The ova of the bleak are larger than those of the tench, 

 and are for that reason preferable for the purposes of observation, 

 besides being more easily procured. When they had reached the point 

 at which the globules disappear, their vitality was no longer destroyed 

 by the acid before-mentioned ; but they were then placed upon a piece 

 of black cloth, or more frequently on a plate of polished silver in a glass 

 of water, and the changes they underwent examined by means of a sin- 

 gle lens. The author afterwards had an opportunity of watching a 

 large shoal of Cyprinus Gobio in the act of spawning ; he took up three 

 or four pebbles upon which about a dozen eggs were deposited, and 

 placed them in an earthenware vessel in his room, and paid no farther 

 attention to them. About eight or ten days after, he observed four 

 young fish swimming about with vigour, which were so transparent as 

 not to be easily seen except in dark-coloured vessels, and he appears to 

 have met with none of the difficulties in rearing fish from the ova, which 

 Herr von Baer states to have so much impeded his observation. 



These numbers also contain a paper on the Spermatic Entozoa of 

 vertebrate animals, by Professor Wagner, and one on those of the inver- 

 tebrata, by Dr Siebold of Danzig. The latter author also has one on 

 the anatomy of the Asterias ; and there is likewise the first part of a 

 paper on the effects produced by acetate of lead on the organism of 

 animals (dogs and rabbits), by Dr C. G. Mitscherlich. 



On Collections and Museums. By Mr. J. McClelland. 



We make no apology for extracting the following from the Proceed- 

 ings of the Asiatic Society; chiefly consisting of the remarks of Dr. 

 Horsfield, the Curator of the Honorable Company's Museum, con- 

 tained in a letter in which he solicits from India contributions for the 

 collection under his charge, regarding which he observes — 



" The Museum itself is not very extensive, but it is nevertheless of 

 much importance in connexion with Indian zoology, as it contains 

 several extensive local collections. 



" It consists mainly of the following Faunas, which are more or less 

 perfect : — 



"Firstly. A collection of upwards of 200 species of birds from 

 Java, and a proportional number of quadrupeds. This was formed by 

 myself, and brought to England in 1819, when it constituted the nucleus 

 of our zoological collection. 



" Secondly. We have a pretty complete series of Birds collected in 

 Sumatra by Sir Stamford Raffles, and some of his Mammalia. 



T 



