SCIENCE. 



RECORD OF SCIENTIFIC PROGRESS, ILLUSTRATED. 



dollars a Year. Two Dollars Six Months. 



Uar Three Months. Single Number Ten Cents. 



s established on the 1st of July, 1880, for the purpose of providing a 

 •ientific journal, and affording a rapid means of communication between 



ly numbers have been so far issued, and the editor has received letters of 

 i offers of support from gentlemen representing all branches of science, 

 completed on the 31st of December, 1880, and was provided with an 

 mces. The present volume (II) was commenced on the 1st of January, 

 jmpleted on the 31<;t of December. It will be a handsome volume of 

 "8, having index with about 10,000 references. 



k of scientific reference the annual volume of " Science" will stand 

 e a valuable addition to every library, and as a scientific handbook 

 i reach of every working scientist and practical man. 

 nt manner of taking " Science" is to subscribe, but it can be ordered 

 dealer. It then arrives every week presenting you with the current 

 ; es of original papers of the highest value, and interesting discussions, 

 anient size for binding, being of the same dimensions as Nature, and 

 can be handled with ease. 



oen taken of every number since the commencement; new subscribers 

 nee purchase the back numbers, as they can complete their sets at 



abit of publishing congratulatory letters, as we have trusted to the 

 >n to secure support; the following unsolicited indorsements may 

 presenting the feeling of the scientific men of this country in regard 



"United States Senate Chamber, 

 "Washington, Sept. 19th, 1881. 

 l to Washington, a few days ago, I found my file of 'Science* com- 

 me through the numbers with much pleasure. I sincerly trust that 

 manently established, for it has already made a name and place for 

 working scientist would wish to be without. It seems to me to be 

 l as "up to the mark," and can therefore hardly fail to achieve the 

 it obviously merits. , "Elliott Cottes." 



"Washington, Aug. 24th, 1881. 

 ,o be able to add my voice to those of others in congratulating you 

 lich has attended Science. I have no doubt that the periodical is 

 i America the same position held by Nature in England. 



" Alexander Graham Bell." 

 ' ' University of Pennsylvania. 

 ' is a credit to all concerned. — George F. Barker." 



Jepartment is conducted by Mr. John Michels, with the valuabL 

 f the leading scientific specialists of the United States. 



OFFICES OF PUBLICATION. 



me Building (Room 17) New York City. 



e directed to Mr. Deacon, 150 Leadenhall Street. London, England, 

 iefrom chief office, orcan be ordered of any news dealer (Price ten cent i 

 If any difficulty is found in obtaining "Science" send to hea ' 



