374 



Miscellanies. 



sacs so far, that it occupies the whole space of the body, and then 

 the devoured substances, very similar to the ventral sacs, circulate 

 in the whole body. Yours, &c. 



Ehrenberg. 



London, Sept. 15, 183S. 



1 2 3 



11/ W 



Ideal figures of Loxodes Bursaria in various states of the ex- 

 tension of the alimentary canal, and its inner circular motion, not 

 of the ventral sacs, but of the contents of the sacs voided into the 

 canal a the mouth, b the alimentary canal, c ventral sacs, w canal 

 aperture. 



MISCELLANIES. 



1. Dr. Torrey's* Experiments on the Condensation of Carbonic, Sul- 

 phiii'ous, and Chloro-chromic Acid Gases. — We have been, from time to 

 time, informed by letters from Prof. John Torrey, of New York, of his 

 progress in the condensation of gases, and we now take the liberty to 

 give some few citations from his letters, although not intended for publi- 

 cation, satisfied that Dr. Mitchell, who has given us such fine results, will 

 be glad to see them, and trusting that Dr. Torrey will pardon the use 

 made of his private communications. 



March 5, 1837 — It it stated by Prof T. that a few days before he had 

 prepared several tubes of liquid carbonic acid at Princeton, New Jersey. 



April 11 — He writes again, that although he had been unable to get a 

 mechanic to construct an apparatus for condensing carbonic acid, he had 

 made many experiments on the subject in tubes of glass, and with entire 

 success. He says, that only a single accident occurred, which however 



* See Dr. Mitchell's Experiments, p. 346. Also at p. 301, Mr. R, Addaras's re- 

 marks on the same subject. — Eds. 



