SCIENCE. 



iii 



CLUB RATES. 



Analyst 



Appleton's Monthly 



American 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. 



$7 oo 



* 



$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 



4-25 



7.00 



1. 00 



4-75 



2.00 



5-5° 



4.00 



7.00 



1.60 



5-25 



1.50 



S-2S 



1-5° 



S-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 



1-5° 



5.20 



3.00 



6.25 



5.00 



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 ._ 



Popular Science Monthly 



Sanitary Engineer 



Practical American.. 



Pacific Rural Press ._ 



Scribner's Monthly 



Science Observer 



Scientific American 



" Supplement 



" with Supplement 



Southern Medical Record 



Student. 



St. Nicholas 



Young Scientist 



750 



9-34 



2.00 



5-5° 



5.00 



7-5° 



5.00 



8.00 



4.00 



6.40 



6.00 



9-'S 



4.00 



7.00 



3.00 



6.40 



500 



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 



■SO 



4-4° 



3.20 



6.56 



5.00 



8.00 



7.00 



9.60 



2.00 



5-4° 



1. 00 



4-75 



3.00 



6.40 



• 5° 



4.30 



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. II, No. 75, 



December 3, 1 881 



CONTENTS. 



Sugar Analysis (Edit.) ; Proceedings of the New York Academy of Sciences, November 

 7 and November 14 ; Ringing Fences, by Prof. Robinson ; The Aye-Aye or 

 Cheiromys of Madagascar (illustrated) ; Detection of Oleomargerine, by P. Casa- 

 major; Filaria of the Human Blood; A Very Remarkable Meteor; Instructions 

 Issued by the International Conference for the Observation of the Transit of Venus 

 of 1882; Atomic Phyllotaxy ; Dr. Draper's Meteorological Report ; Minor Notes, 

 etc., etc. 



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