XXXIV PROCEEDINGS. 



It will be seen that in both series of observations the values of th e 

 modulus are large at the outset, diminish in value as the original stress 

 is increased, reach a minimum value and thereafter increase with the 

 original stress. The irregularity of the fourth and fifth determinations 

 in the first series, is obviously due to the unusually long intervals of 

 time which, as the first table, p. xxx, shows, intervened between the two 

 pairs of observations on which they are based. The variation of Young's 

 Modulus with initial stress, th additional stress being roughly constant, 

 would thus appear to be similar to that which was shown above to hold 

 with respect to additional stress when initial stress is constant. 



It should be noted, with respect to all the above determinations of 

 Young's Modulus that the values found apply to the state of the cord 

 immediately after the application of the additional stress, and in addition 

 that the cord was subjected to torsion after each observation of length. 



Mr. Macdonald hopes to be able to continue the above investigation 

 at a later date. 



The paper was discussed by DR. MURPHY. 



JAMES BARNES, ESQ., B A., Dalhousie College, read a paper " On 

 the Conductivity, Specific Gravity, and Surface Tension of Aqueous 

 Solutions containing Potassium Chloride and Sulphate." (See Transac- 

 tions, p. 49.) 



HARRY PIERS, ESQ., read a paper entitled, " Observations on a Fish 

 new to the Fauna of Nova Scotia." (Sec Transactions, p. 110.) 



CHARLES F. LINDSAY, ESQ , read a paper "On the presence of Acid 

 Sulphates in Solutions containing Copper Sulphate and Sulphuric Acid." 



The paper was discussed by PROFESSORS E. MACKAY and MACGREGOR, 

 and DR. A. H. MAC KAY. 



A vote of thanks was presented to MESSRS. MACDONALD, BARNES and 

 LINDSAY for their communications. 



The following paper was read by title : " Notes on Nova Scotian 

 Zoology : No. 5," by HARRY PIERS, ESQ. 



The Council was authorized to receive as read by title, any papers 

 that might be offered too late for this meeting. 



HARRY PIERS, 



Recording Secretary. 



