11 



ADVERTISEMENT. 



stone, thompsonite, chlorastrolite, 

 dumortierite, dioptase, the latest, from 

 Congo, at $1.50 per c. and all other 

 known semi and precious stones. 



A TWO MONTHS BARGAIN SALE. 



It has been usual for the past four 

 years to offer special inducements to 

 visit us during the summer months. 

 In order to do this, with little expense 

 to yourself, we offer you a 10% dis- 

 count on rare and polished minerals 

 and cut gems and 20% on ordinary 

 mineral specimens. This enables you 

 to pay your travelling expense with 

 the discount on your bill. If you are 

 able to visit us and see our wonderful 

 display, write us what you are inter- 

 ested in, and we will send you a box 

 on approval. We prefer to be busy 

 even if we have to divide our profits 

 with you. Don't delay but write or 

 call on us at once. This offer holds 

 good only for July and August. 



If you have not yet received our new 

 12 page mineral and 10 page gem cir- 

 cular, write us and we will send them 

 at once. A. H. Petereit, 81-83-Fulton 

 Street, New York City. 



Personal. 

 The Mineral Collector was merged 

 in The Guide To Nature with the ex- 

 pectation that the interests of mineral- 

 ogists would thereby be advanced. 

 The Guide to Nature is published by 

 gifts from friends and the membership 

 fees of a company of students and 

 lovers of nature known as The Agas- 

 siz Association. No one receives a sal- 

 ary nor any money compensation. 

 Many persons, including myself, de- 

 vote time and money to "the good of 

 the cause." If we were a business in- 

 stitution we would invest in the pub- 

 lication of a large, well illustrated de- 

 partment of "Mineralogy" and say, 

 "Behold the goods. Will you buy?" 

 But we are not a business ; we are a 

 co-operation and you are or should be 

 one of the co-operators. The ques- 

 tion is, what will you, and others do 

 to advance the interests of the cause? 

 You doubtless arc moie interested in 

 mineralogy than I. I am willing to 

 devote much time and some money, 

 but I cannot do all. If the burden is 

 left mostly to me, it comes too hard 

 on me and members of my family who 

 assist. If every mineralogist would 

 send his own subscription and that of 

 a friend (only one dollar and seventy- 



five ($1.75) cents a year for the two) 

 and even one good article (not too 

 long) with illustrations, how, oh, how 

 the work would grow, what a fine de- 

 partment of many pages we could have. 

 How easy it would be for all ! 



Please try it. 



Let us have the two subscriptions 

 and one article. I am willing to do 

 my part. I want to make the depart- 

 ment larger and better. What is your 

 vote? I cannot do it all. 



WANTED — Photographs and articles of interest to children 

 for my Nature and Science of St. Nicholas Magazine or 

 for adults for the Guide to Nature. Please send for ex- 

 amination whatever you may have, or submit lists and outlines, 

 of what you can supply Edward F. Bigelowi Sound Beach, Ct. 



Airedale Rabbitries 



The Home of the Best Bred Dutch 

 and English Marked Rabbits in the 

 States. If you want quality, write 

 with stamps to 



Robert Whitaker, Dalton, Mass. 



The Condor 



*> 



A Magazine of Western Ornithology. 

 Edited by J. Grinnell. 



Associate Editors: 

 William L. Finley Robert B. Rockwell 



"Official Organ of the Cooper Ornithological 

 Club." 



Vol. XI, 1909 



will contain the usual interesting articles 

 by live active ornithologists and will be 

 illustrated by the highest class of half 

 tones. You cannot afford to miss a num- 

 ber. 



Published bi-monthly at Hollywood, 

 California. Subscription: $1.50 per year 

 net in advance. Single copies: 30c each. 

 Foreign subscription: $1.75. 



J. Eugene Law, Business Manager 



Hollywood, California. 



W. Lee Chambers, Assistant Manager, 



Santa Monica, California, 



