SCIENCE 



New Series 

 Vol- LI, No. 1S13 



Friday, February 27, 1920 f"'-' <^°"^' ^^ c''^- ,.„. 



Physical Chemical Apparatus 



Freu SeBtitive Water Thermottat, Small Size 



We are headquarters for Balances; Specific Gravity Apparatus; Conductivity Ap- 

 paratus ; Electrodes ; Molecular Weight Apparatus, including Boiling Point, 

 Freezing Point, and Drop Weight Apparatus; Pyrometers, Standard Cells; Ther- 

 mostats, Viscosimeters; etc. 



We supply the apparatus listed in Findlay and other standard text books. If 

 special apparatus is desired, give full details. The Physical Chemical Glassware 

 made by our glass blowing department is justly in high esteem . 



j-imer ^^Amend 



NEW YORK ^^t^ PITTSBURGH BRANCH 



3rd Ave., 18lh— 19tli St. ^!;_;iS' 2011 Jeokin* Arcade 



