ioo Proceedings. 



Ordinary Meeting, February 20th, 1894. 



Professor Arthur Schuster, Ph.D., F.R.S., F.R.A.S., 

 President, in the Chair. 



The thanks of the members were voted to the donors of 

 the books upon the table. 



Mr. W. E. HOYLE, M.A., exhibited the following shells, 

 recently acquired by the Manchester Museum : — 



(1) Batkybembixargenteonitens,from]apzn. A character- 

 istic deep-sea form, with delicate sculpture and pale irides- 

 cent colouration. 



(2) Columbarium pagoda. A rare marine shell from 

 Japan. 



(3) Columbarium distaphanotis. A beautiful shell, of 

 which the type-specimen from an unknown locality is unique. 

 This example is from the Cholmondeley collection. 



(4) Opisthostoma mirabile. A land shell from Borneo, 

 in which, after a certain number of spiral turns, the shell 

 bends upwards and the mouth comes to lie close to the 

 apex. 



(5) P alaina >Quadrasi. An exquisitely sculptured oper- 

 culars land shell from Manila, in which the first whorls form 

 a right-handed and the last a left-handed spiral. 



Professor SCHUSTER exhibited an apparatus in use at 

 Owens College for testing clinical thermometers, and read 

 the following note : — 



" The Owens College has, during the last few years, 

 undertaken the testing of clinical thermometers for medical 

 men and others. It is the object of this note to describe the 

 apparatus by means of which a number of these thermo- 



