SCIENCE. 



CLUB RATES. 



Analyst 



Appleton's Monthly 



Amkrican Naturalist 



American Journal of Science 



American Journal of Microscopy 



American Machinist 



American Monthly Microscopical Journal 

 American Manufacturer and Iron World. 



Boston Journal of Chemistry 



Chicago Medical Review 



Chicago Field 



Druggist 



Druggists' Circular 



Educational Monthly (Barnes ) 



Engineering News 



Engineering and Mining Journal 



Education 



Engineering Magazine 



Harper's Magazine 



Harpers Weekly 



Harper's Bazar 



Harper's Young People 



Humboldt Library 



International Review 



Subscrip' 

 tion. 



With 

 Science. 



$2.00 



$5.50 



3.00 



6.26 



4.00 



7.20 



6.00 



8.50 



1. 00 



4.70 



3.00 



6.70 



1. 00 



4.80 



425 



7.00 



1. 00 



4-7S 



2.00 



5-5° 



4.00 



7.00 



1.60 



5-*5 



1.50 



5-2S 



1.50 



5.20 



3.00 



6.25 



4.00 



7.00 



4.00 



7.00 



5.00 



8.25 



4.00 



7.00 



4.00 



7.20 



4.00 



7.20 



1.50 



5.20 



3.00 



6.25 



5-oo 



8.00 



Iron 



Journal of the Telegraph 



London Lancet 



Magazine of American History 



Mining and Scientific Press 



Nature 



N. Y. Medical Journal 



New England Journal of Education 



North American Review 



Operator 



Popui ar Science Monthly 



Sanitary Engineer 



Pracicat American 



Pacific Rural Press 



Scribner's Monthly 



Science Observer 



Scientific American 



" " Supplement 



" _ " with Supplement. 



Southern Medical Record 



Student 



St. Nicholas 



Young Scientist 



Subscrip 

 tion. 



With 

 Science 



7.50 



9-34 



2.00 



S-5° 



5.00 



7oO 



S-oo 



8.00 



4.00 



6.40 



6.00 



9-'S 



4.00 



7.00 



3.00 



6.40 



5-oo 



7-75 



1. 00 



4.80 



5.00 



8.00 



3.00 



6.50 



1.50 



5.00 



4.00 



7.00 



4.00 



7.20 



.50 



4.40 



3.20 



6.56 



5.00 



8.00 



7.00 



9.60 



2.00 



5-4° 



1. 00 



4-75 



3.00 



6.40 



•50 



430 



International Scientists' Directory. 



THE INTERNATIONAL SCIENTISTS' DIRECTORY for 

 1881-2, contains the names and addresses of from 15,000 to 20,000 

 Scientific men and amateurs in all parts .of the world, together with 

 their special branches of Science, and other items of interest relating 

 to collections, duplicates, desiderata, etc. of each. 



This is the first work of its kind ever attempted, and it will be 

 found of great value to all who are interested in any department of 

 Science. Price, in paper, $2.00. In cloth, $2.50. Sent post-paid 

 on receipt of price. ' S. E. CASSINO, Publisher, 



32 Hawley Street. Boston, Mass. 



SCIENCE 



A WEEKLY JOURNAL OF SCIENTIFIC PROGRESS. 



Vol. Ill, No. 80, 



January 14, 1 882. 



CONTENTS. 



The Teachings of Herbert Spacer (Edit.) ; Pioceedings of the New York Academy of 

 Scii ncis, December 21st, 1881 ; "The Gf-ology of S aten Is'and ;" "The Mam- 

 moth Cave of K n ucky ;" Corresp nd nee — from Pr fes-or G-orge Morris in reply 

 to articl< s in "Popular Science Monthly" on the Atheistical Wii ings of Herbert 

 S. ercer ; Irom Piol< s->ot C. A. Young on his work " The Sun ;" from PioftS:or J. 

 H. Pill-bury on Parental Affection in Animate ; The .Holland Hydrogen Fire 

 Apparatus, W. C. C; Prjgr-ss in M.xed Metallurgy, by William C. Conant ; In- 

 tegral Lubrication ; Books Received ; Progress in Photography; Notes, &c, &c. 



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