282 ROCHESTER ACADEMY OF SCIENCE. [Oct. 24, 



Mr. J. E. Putnam showed the results of some original and 

 promising investigations which he had been making in color pho- 

 tography. 



Mr. H. K. Phinney spoke of the loss of a tree of the striped 

 maple (^Acer peyiiisylvaniciini) . This species of maple is rare in the 

 city, only two specimens growing in Highland Park and one in 

 Seneca Park. The one cut down was growing on Alexander street, 

 and, so far as known, was the only one in the city outside the parks. 



Mr. George H. Chadwick spoke of a trip taken to the top of 

 Slide Mountain, in the Catskills, and of the examination of a mastodon 

 skeleton found near Xewburgh, X. Y. 



Miss Beckwith spoke of the Russian Thistle and exhibited 

 specimens. It is spreading in the vicinity of Rochester, being now 

 reported at East Rochester, on the flats near the lower falls, at 

 Despatch, and Lincoln Park. 



President Fairchild told of a trip to Kelly's Island, Put-in- 

 Bay, Ohio. The point of interest was a cave found at the depth of 

 twenty-five feet, and wholly lined with celestite crystals. It is large 

 enough to hold twenty people and is effectively lighted by electricity. 

 President Fairchild also spoke of the glaciation of the Corniferous 

 limestone at Kelly's Island, Lake Erie. 



October 24, 1899, 



The meeting was held at the Reynolds Library ; President 

 Fairchild in the chair; one hundred sixteen persons present. 



Mr. }. P. MacLean, Librarian of the Western Reserve Histori- 

 cal Society, of Cleveland, Ohio, gave an address upon 



THE MOUND BUILDERS. 



The lecture was illustrated by numerous lantern slides showing 

 the location, structure, form, and appearance of the more important 

 mounds in Ohio. 



A vote of thanks was tendered Mr. MacLean for his interesting 

 lecture. 



