80 



Dr. A. S. PACKARD, Jr., exhibited a large series of pho- 

 tographs of scenery in Colorado and Montana Territories 

 taken by Mr. A. H. Jackson, under the auspices of the 

 United States Geological Survey of the Territories, Dr. 

 F. Y. Hay den geologist. They were in two sets, and 

 comprised some of the finest views in the National Yel- 

 lowstone Park and Colorado Territory. From them one 

 could obtain a very clear idea of the Geyser region which 

 has been studied and mapped out by the Survey ; of the 

 springs in course of eruption, and of the falls and basin 

 of the Yellowstone. He gave an account of the supposed 

 origin of these extensive hot springs of which several 

 thousand are supposed to exist. He also alluded to the 

 value and interest of the discoveries made by Dr. Hay den 

 in the west for a period of nearly fifteen years. 



STONE KNIVES. 



Mr. F. W. PUTNAM occupied the greater portion of the 

 evening with an account of the various forms of cutting 

 instruments made of stone, and classed by archaeologists 

 under the general head of knives. A large number of 

 specimens were exhibited, showing the different forms so 

 far as they were represented by specimens in the Museum 

 of the Peabody Academy of Science. 



Knives or cutting instruments of various shapes and 

 degrees of perfection have been found in more or less 

 abundance in all parts of the world where stone imple- 

 ments have been collected and studied. Many of these 

 cutting implements are simple flakes of flint or other stone ; 

 in fact any stone with a sharpened edge attained either by 

 chipping or grinding, and- of such a form as to show that' 

 it was not intended for use as a skin scraper, dagger, 

 ^spearhead, arrowhead, small axe, or other similar imple- 

 ment, is classed under the head of knives ; but while 



