434 ANNALS NEW YORK ACADEMY OF SCIENCES 



Summary of Papers. 



Mr. Hyde 's paper was given with the aid of lantern slides and was fol- 

 lowed by a brief discussion by Dr. Berkey. It was pointed out that a 

 complicated lot of structures are preserved under conditions that point to 

 very different behavior at some former time. There is brecciation, fault- 

 ing, bending, oversteepening and other phenomena that seem to implicate 

 former incorporation in the ice sheet and the development of differential 

 movements while frozen and suffering deformation with the rest of the 

 ice mass. 



Professor Woodman illustrated his talk with many charts and maps 

 and gave an instructive account of the results of detailed field work in 

 Nova Scotia. 



Dr. George F. Kunz announced the discovery of a new gem district at 

 Mount Bitz, in Madagascar. The gems occur in a pegmatite vein carry- 

 ing, among other rare minerals, a pink beryl. It is a caesium beryl of re- 

 markable rose-red color and capable of furnishing beautiful gem stones. 

 The name Morganite is proposed for this gem. 



The Section then adjourned. 



Charles P. Berkey, 



Secretary. 



SECTION" OF BIOLOGY. 



December 13, 1910. 



Section met at 8:15 P. m., Mr. Eoy W. Miner presiding. 



The minutes of the last meeting of the Section were read and approved. 



The following programme was then offered : 



G. G. Scott, The Effect of Changes in Water Density on the 



Blood of Fishes. 

 Roy W. Miner, Marine Ecology and its Representation in a 



Museum. 

 Ignaz Matausch, Exhibition of Models of Membracidje. 



Summary of Papers. 



Mr. Scott said in abstract : When salt water fishes are placed in fresh 

 water, they gain in weight. Investigation of the blood shows that there 

 is a decrease in number of corpuscles per cu. mm. and that the specific 

 gravity of the blood decreases. Tests with the Beckmann apparatus 



