SCIENCE 



New Series 

 Vol. L, No. 1281 



Friday, July 18, 1919 



Single Copies, 16 Cts. 

 asmual subsceiption, $8.0< 



Morgan Dropweight Apparatus 



The Standard Apparatus 

 for determining the vapor 

 tension of liquids, drop- 

 weights, etc. 



Made according to the speci- 

 fications of Prof. J. L. Morgan, 

 of the Department of Physical 

 Chemistry, Columbia Univer- 

 sity. The apparatus is blown 

 and the various parts ground 

 to fit exactily by expert work- 

 men in our glass shop. 



Every part is guaranteed to 

 be of the highest quality work- 

 manship, made from the finest 

 glass, and to be standard in 

 every particular. 



Complete ivith 

 Case, $75.00 



EIMER & AMEND 



FOUNDED 18.'51 

 SOLE MANUFACTURERS AND DISTRIBUTORS 



National Headquarters for Fine Scientific Apparatus, C.P. and 

 T.P. Chemicals and Laboratory Supplies 



Third Avenue, 18th to 19th Street NEW YORK, N. Y. 



PITTSBURGH OFFICE: 2011 Jenkins Arcade 



