CONTENTS. 



On the Morphology of the Antlers, and other Characters 



OF THE DEER ETC., . . .' Prof, Theodore Gill. 21 



Timber-Trees of the Dismal Swamp' Lester F. Ward. 2g 



Response to " Good Words " James S. Johnson. 3/ 



The Subject of Insect Warfark in Great Britain Nature. 32 



Correspondence j6 



Minerals, Shells, Birds, &c. 



The Naturalists' Agency has b-en established at 3725 Lancaster Avenue, Philadelphia, for the pur- 

 pose of giving collectors of Natural History, an opportunity 01" buying selling or exchanging their dupli- 

 cates or collections. ,,„.-., 



Specimens sent to any part of the world by mail An illustrated bulletin ot eight pages sent free. 



1 received the highest award given to any one at the Centennial Exposition of 1876, and the only award and 

 medal given to any American for " Collections of Minerals." 



My Mineralogical Catalogue, of 50 pages is distributed free to all customers, to others on receipt of 10 cents. 

 It is profusely illustrated and the printer and engraver charged me about #900,00 before a copy was struck off. 

 By means of the table of species and accompanying tables most species may be verified. The price list is an 

 excellent check list containing the names of all the species and the more common varieties, arranged alphahet- 

 tfcally and preceeded by the species number. The species number indicates the place of any mineral in the 

 table of species, after it will be found the species name, composition, streak or lustre, cleavage or fracture, 

 hardnesss, specific gravity, fusibility and chrystalization. _ 



The large increase of my business has compelled me to rent the store No. 3727, and use it entirely for Birds, 

 Mammal's, Shells, Plants, Books, Fossils, Mound Builders' Relics and other objects of Natural History. I 

 have secured the services of one of the best taxidermists in the country, and can do the best custom work. 



Over 38 tons, and nearly #35,000 worth of Minerals on hand. . #19,000 worth sold since the 17th day of Jan- 

 uary when the first box was put into my establishment. November 13th, my cash sales were over #1,500 and 

 cash receipts over #1,200. 



COLLECTIONS OF MINERALS 



For Students, Amateurs, Professors, Physicians, and other Professional Men. 



The collections of 100 illustrate all the principal species and all the grand subdivisions in Dana and other 

 works of Mineralogy ; every Crystalline System ; and all the principal Ores and every known Element. The 

 collections are labelled with a printed label that can only be removed by soaking. The labels of the #5.00 and 

 higher priced collections give Dana's species number, the name, locality, and in most cases, the composition 

 of the mineral. All collections accompanied by my Illustrated Catalogue and table of contents. 



Number of Specimens. 



Crystals and fragments 



Student's size, larger 



Amateur's size, 2% in- x *}i 



High school or academy size, 2% x 3^ in. shelf specimens 

 College size, 3% x 6 in., shelf specimens . . . ■ 



25 



in box 



50 

 in box 



100 

 in box 



100 



200 



300 



Sso 



#1.00 



#r.So 



#i-5o 



# 2.00 



$ 3.00 



1 50 



3.00 



6.00 



5.00 



10.00 



25.00 









10.00 ' 



25.00 



50.00 









5.00 



50.00 



100.00 









50.00 



150.00 



300.00 



Send for the bulletin stating whjre you saw this advertisement 



.a.. :e. ifootie, zmi. id. 



Prof, of Chemistry and Mineralogy, 



Felloi'jofthe American Association for the Advancement of Science ; Life Member of the 

 'Philadelphia Academy of Natural Sciences and of the America?i Museum 

 of Natural tiistory, Central Park, New York. 



CATALOGUE OF BIRDS of the DISTRICT of COLUMBIA. 



The Catalogue of Birds of the Distria of Columbia has just been issued in pamphlet form. The list, num- 

 bering 240 species, was prepared by Mr P. L. Jouy, and Drs . Cones and Prentiss— the compilers of the for- 

 mer list, published in the Smithsonian Report for 1861— have added several pages of notes, making in all an 

 octavo pamphlet of eleven pages. Price, 10 cents, post-paid. Address Editor Field and Forest, 



Box 273, Washington, D. C. 



