PROCEEDINGS XXV 



in order that it might draft a notice to the members, re- 

 questing them to bring before the society the results of all scienti- 

 fic work they might be engaged upon, to be published in 

 abstract or in some cases in full. 



The following papers were read: 



(1) Hydrogen in Cathode Zinc. — -By W. Roy Elliot, B. 

 A., Dalhousie Univ. The subject was discussed by Dr. John- 

 stone. 



(2) Negative Geotropy of the Periwinkle. — By F. 

 Ronald Hayes, Dalhousie Univ. The subject was discussed 

 by Dr. MacKay, Mr. Piers and Prof. Gowanloch. 



(3) On the Radium Content of Some Nova Scotian 

 Minerals. — By Carl C. Kenty, M. Sc, Dalhousie Univ. The 

 paper was discussed by Mr. Piers and Dr. Henderson. 



Fourth Ordinary Meeting 



Dental Lecture Room, Dalhousie University, Halifax, 

 ISlh February, 1926 



The President, Dr. Ritchie, in the chair. 



The committee on popular lectures reported that it was try- 

 ing to arrange for an exhibition of interesting scientific material 

 to be held, if possible, in April. 



Prof. Harold S. King presented a paper entitled "Note 

 on a Simple Still for the Preparation of Pure Water." The sub- 

 ject was discussed by Dr. Bronson, Dr. MacKay amd Mr. 

 Piers. 



K. L. Dawson, A. M. E. I. C, of the N. S. Tramways and 

 Power Co., Halifax, read a paper on "The Removal of Carbon 

 Disulphide from Coal Gas in Halifax: a Study in Vapour 

 Pressure." The paper was discussed by Dr. MacKay, Prof. 

 Gowanloch, Prof. D. S. McIntosh and Mr. Piers. A vote of 

 thanks was presented to Mr. Dawson for his communication. 



