871 



NOTES AND EXHIBI'J'S. 



Mr. Froggatt exhibited specimens of the larvae of the Sheep 

 Nasal or Bot-fly {CEstriis ovis, L.) taken from the heads of sheep 

 killed at Megalong last month. Reports have come in from 

 several places on the Blue Mountains showing that this pest has 

 been infesting the sheep of late. Also, two very handsome 

 undetermined grasshoppers (Fam. Locustidca) from Mt. Magnet^ 

 Murchison, W.A., lately received from Mr. Mansbridge. 



Dr. Chapman exhibited a sample of pure pancreatic juice 

 (saturated with sodium fluoride to preserve it). It was collected 

 through a glass canula inserted into the larger pancreatic duct of 

 a dog. The secretion of juice was excited by the injection into 

 the right jugular vein of 43c.c. of an extract of the mucous 

 membrane of the intestine of Echidna hystrix made with 0*4 % 

 hydrochloric acid. Secretion occurred at the rate of seven drops 

 per minute after a latent period of 90 seconds, and continued for 

 10 minutes. It then lessened and became slower, ceasing in 

 about 50 minutes. The juice acts upon starches and fats, and 

 therefore contains amylopsin and steapsin. It has no action 

 upon proteids, and thus contains no trypsin. After treatment 

 with enterokinase, it acts energetically upon proteids, since the 

 contained trypsinogen is thereby converted to trypsin. The 

 specimen demonstrates the occurrence of a " secretin " in the 

 mucosa of the intestine of the Echidna; and mention may be 

 here made of similar bodies in the Wallaby, Ibis, and Australian 

 Water-tortoise. 



Mr. Jensen exhibited a series of slides of Foraminifera under 

 the microscope, in illustration of his paper. 



Dr. Greig Smith, in illustration of his papers, showed cultures 

 and products of the Bacilli procured from the Quince and from 



