158 Note on Bulimus Ciliatus, Gouhl. 



Under surface of both pairs pale fuscous. 

 Expanse. 25-28 millimetres. 

 Habitat. — New York: Pennsylvania. 



I take pleasure in dedicating this species to my friend and 

 colaborer, Mr. A. R. Grote. 



VI. — Note on Bulimus ciliatus, Gould: 



By Mr. A. D. Brown*, of Princeton, N. J. 



Communicated by Mr. T. Bland, March 8th, 18G9. 



Gould, in his description of this species (Exped. Shells, p. 

 32), has the words "labrum simplex" and gives as habitat the 

 " Organ Mountains, Brazil.'' 



His description was evidently taken from an immature 

 shell, as I have collected many specimens of it with a well 

 developed reflected lip. I found it not rare at " San Domingo," 

 a suburb of Rio de Janeiro, but have never met with it in the 

 Organ Monntains, although I have collected extensively 

 among them. 



In San Do m in go, it is found upon the trunks of trees accom- 

 panied by B. auris-leporis^ Brug. 



VII. — On Tribasic Phosphoric Acid,' its history^ its modes 

 of separation from sesquioxyds, principally from Sesqui- 

 oxyd of //■"//. and its estimation. 



l'.Y I "All, Si ■IIWEITZEtt. 



Bwd March nth. 1869. 



One of the most important and interesting chapters of 

 natural science is the history of phosphoric acid. Not only 

 has the stud)* of it given us a deeper insighl into the secret 



