NEW PRICE-LISTS 



No. 220. Summary of Collections of Rocks and Minerals. 



Briefly describes over 200 scientific collections which 

 we put up. 



No. 225. Minerals Sold by Weight. Gives prices of several 

 hundred minerals for College Laboratories and chemical 

 examination. 



No. 224. Autumnal Announcements 1920. Briefly mentions 

 eleven collections bought during the past year, sum- 

 marizes the purchases made by our Mr. English in 

 Europe and many other recent additions to our stock 

 of minerals. 



Supplement to Price-List of Rocks No. 188. 



Supplement to Price-List of Minerals for Working Collections 

 No. 202. 



Larger and more scientifically important additions to our stock of 

 Minerals were made during the past year than for 

 many years past. 



Let us know your needs. If possible come to Rochester and see 

 our great stock. 



WARD'S NATURAL SCIENCE ESTABLISHMENT 



DEPARTMENT OF MINERALOGY AND PETROGRAPHY 

 George Letchworth English, Mamager 



84-102 College Avenue, Rochester, New York 



