80 TRANSACTIONS OF THR N. Y. ACADEMY OF SCIENCES. 



A paper by Dr. N. L. Britton, 



A revision OV the north AMERICAN SPECIES OP THE GENUS SCLERIA. 



was read by title (Published in the Annals, vol. iii., pp. 228- 

 237). 



Prof. D. S. Martin described an interesting case of freezing by 

 the cold of evaporation noticed by liim in the summer of 1883. 

 At Richtield Springs, N. Y., the gas used in the New American 

 Hotel is manufactured from a liglit naphtha. This naphtha 

 contains some water and the circumstance noted was this, viz : 

 that in some barrels of the naphtha lying in the sun a leakage 

 took place through crevi(;es in the barrels, and there the cold 

 produced by the very rapid evaporation of the naphtha froze 

 the water into a snow-white efflorescent line or band. It was 

 a curious and very striking ilhistration of the old and well- 

 known experiment of freezing water in a hot ladle by previously 

 mixing it with etlier, which is so violently evaporated by the heat 

 as to freeze the water to ice. 



Mr. W. E. Hidden exhibited photographs of a meteorite 

 found in Laurens Co., N. C, in 1857, and now first described. 



June 1st, 1885. 

 Regular Business Meeting. 

 The President, Dr. J. S. Newberry, in the chair. 

 Thirty- six persons present. 



The Report of the Council, recommending payment of bills, 

 was adopted. 



Mr. G. F. Kunz exhibited a blue beryl from Mt. Anteros, 

 Colo. 



Mr. W. E. Hidden then read the following paper ; 



minerals of special interest at the new ORLEANS EXHIBITION. 



The Academy then adjourned till Oct. 5th, 1885. 



