OVER 30,000 LOOSE CRYSTALS 



Were added to our stock during the single month 

 of August. Can anyone question that we are head- 

 quarters for loose crystals? Yet even with such large 

 additions, there are many crystals we still need and are 

 constantly needing. Anyone, therefore, who can furnish 

 thoroughly meritorious crystals, either in large or small 

 numbers, is requested to send us samples and prices. 

 We have just added a new feature to our crystal collec- 

 tions by adding the form to the label of each crystal. 

 Our new Price-Lists, now in course of preparation, will 

 devote considerably more attention to Crystallography 

 than any previous edition. 



THE PENFIELD CONTACT GONIOMETERS. 



In the current number of The Mineral Collector is an illustrated article, by 

 Prof. S. L. Penfield of Tale University, on two new forms of contact goniometer 

 devised and patented by him. While these instruments are fully as accurate as 

 the expensive brass goniometers and much more convenient, their price is only 50 

 cents, postpaid. We shall be pleased to send a copy of Prof. Penfield's article to 

 anyone desiring the same and will send on approval, to any reliable person, one 

 of each of the forms of the goniometer. Our opinion of their excellence is possi- 

 bly best proven by our initial order for 200 of them. Everyone studying crys- 

 tallography should have ©ne of these admirable goniometers. College professors 

 will find their work of instruction greatly aided by seeing that each of their 

 students is supplied with one. 



GEM SPODUMENE FROM BRAZIL. 



We recently secured some fifty choice pieces of the very rare yellow, gem 

 Spodumene, Triphane. Each piece will yield a fine, perfect gem of $ to 2-J carats. 

 The pieces are most interesting also as mineralogical specimens, as they are not 

 broken fragments, but each one shows either the natural crystal faces, or etched 

 surfaces due to crystallization. We understand that no similar material is for 

 sale anywhere in the United States. Specimens ixi inch up to f xf inch, 50c. 

 to S2.00. 



LUSTROUS PYROXENE CRYSTALS. 



A well-known College Professor has been doing some collecting for us this 

 summer in northern New York, and among other desirable things secured by him 

 which will be noticed hereafter is a lot of specimens of Pyroxene of much beauty. 

 The crystals are highly lustrous and of a dark green color. They range in size 

 from \ inch to 2 inches in length, their diameter being about one-fourth their 

 length. The crystals are well-formed, and the faces brilliant, the edges being- 

 somewhat rounded as though fused. Single crystals 2 for 5c. up to 50c. each ; 

 groups 5c. to $1.00. 



3000 MORE NEVADA ORTHOCLASE CRYSTALS. 



The peculiar excellence of the Orthoclase crystals which we have bean receiv- 

 ing of late from southern Nevada led us to arrange for the active working of the 

 locality. The resulting crystals have just reached us, and there are 3000 single 

 crystals and twins in the lot. The best of them will sell at 5c. to 15c each ; 

 the twins at 10c. to 25c. each. 



OUR FALL BULLETIN 



Will probably be ready about September 20th and will be sent to everyone 

 entered on our list of customers, or to anyone else requesting a copy. It will 

 describe many other recent additions to our stock. 



124-page Illustrated Catalogue, 25c. in paper; 50c. in cloth. 

 44-page Illustrated Price Lists, also Bulletins and Circulars free. 



GEO. L. ENGLISH & CO., Mineralogists, 

 812 and 814 Greenwich Street (S. W. Corner of Jane Street), New York City. 



