The West American Scientist. 



STORMY 



PETREL 



An Eight Page Monthly devoted 

 to Natural History and the best 

 interests of Collectors. 

 Send 20 cents at once for One 

 Years Subscription. 

 Subscribers have the use of our 

 Columns to insert their Exchanges 

 and wants Free. 



It is also a splendid Advertising 

 medium for Dealers in Curiosities, 

 Indian Eehcs, Birds' Eggs, Pet 

 Stock, Etc. 



Send 30 Cents 



and receive a Shark's Egg and tlie 

 Stormy Petrel for One Year. 



ffl. Smith & Co.. 



MENDOTA, IJLL. 



THE AMERICAN NATURALIST 



"Will contain during the fall and winter, 

 among other interesting matter, articles on 



THE EVOLUTION OF xMIND, from a Neo-Lamarck- 

 ian Standpoint, hy Prof. E. D, Cope. 



THE MECHANICAL CAUShS OF THE EVOLU- 

 TION OF THE BIVALVE MOLLUSKA, by R. T. 

 Jackson. 



THE WILD BUFFALO OF MINDORO, by Prof. J, 

 E. Steer. 



THE PHYSIOLOGICAL FORM OF THE AMERI- 

 CAN NEWT, by Prof. Simon Case. 



ON THE LANGUAGES AND LORE OF THE ZUNl 

 PUEBLOS, by Prof. A. J. Fewlies. 



Subscription, - §4.00 a year. 



Single numbers, - 40 cents. 



New subscribers whoce names are received before 

 January 1891, will have their subscription entered 

 as of that date, and the remaining numbers of 1890 

 sent to them free. 



FERRIS BROS., Publishers, 



S. W. Cor. 6th and Arch Sts., - Philadalphia, Pa 



Ciipnnann bird's eggs, 200 kinds; lepi. 



dill UpCall doptera, ■*«•>> varieties; Conchologi- 

 oal specimens, 80() different kinds from Europe, 

 Africa and Australia; Tertiary Fossil Shells, 100 kin Js 

 all good specimens and localised; prices, etc., on ap- 

 plication. No postal cards. Dr. R£ED, Jr., 



Rjhope, Sunderland, England. 



Better than ever Before ! 



IMPROVEMENTS IN EVERY 



DEPARTMENT 



LITERARY AND 3IECHANICAL. 



TOE OBSEBVEB, 



A Medium of Interchange and Ubservations 



For all iStudents and Lovers of Nature. 



Devoted to all Depts. < f Nature Studies. 



E. F. BIGELOW, Editor and Fiiblislier. 



ASSOCIATE RD1T0R3, 



John H. Sage, Ornithology, Portland, Conn. 



M.A.Bocth.F.R.JI.S., Microfcopy, Longmeadow.Mass 



A. W. Pearson, Entomology, Norwich, Conn. 



C. Antoinette Shepard, Botany, New Britan, Ct. 



"Keep Your Eyes Open," (to observe the wonders 

 and beauties of the out-door world) is the motto of 

 This Observer. Do you enjoy roaming over hills and 

 fields or through ihe woods; arc you interested in 

 the birds, flowers, insects, rocks, etc.. or have you a 

 miscrotcope, then .subscribe for TuK Observer. 



Subscription i%0 cts. a year. 



Address, THE OBsERVER, Portland, Conn. 



llemoved to 4116 Elm Avenue, 



PHILADELPHIA, PA. 



Mltl[RALS, SCeilFIC M. MEOiCAl BOOKS, [IC„ 



Tor Sale by A. E. FOOTE, M. V., 



Prof. Min and Chem., Fellow Am. Ass'n Adv. Science 

 and Am. Geological Society. Life Member Am. Mu- 

 seum Nat. History, New York, and Acad, of Natural 

 Sciences of Philadelphia. 



Specimen copy of 32 page NATURALISTS' LEAS- 

 URE HOUR and Catalogues sent free. 



In requesting catalogues of books, please mention 

 in what branch of Natural Science you are e.'ipecially 

 interested. The loO page illustrated catalogue of 

 minerals is sent free to all persons requesting it upon 

 headed paper, to others upon receipt of 5 cents; 

 printed on heavy paper, 10 cents; printed on heavy 

 paper andbciund in cloth, 'Z5 cents. 



