22 ,0 



SCIENCE 



New Series. 



Vol. XXI. No. 538. 



RID AY, April 21, 1905. 



Single Copies, 15 Cts. 

 Annual Subscription, $5.00. 



.ESTABLISHED 1851- 



EIMER & AMEND Zr/vl^uT new york 



Importers and Hanufacturers of 



C. p. Chemicals and Reagents 

 Chemical and Physical Apparatus 



Scientific Instruments 



WE ARE SOLE REPRESENTATIVES FOR 

 Franz Schmidt and Haensch, Polariscopes, etc. 



Carl Schleicher and S chuell, Filterpaper 

 Schott and Genossen, Jena Glassware 



C. A. P. Kahlhaum Chemicals, Reagents 

 and MANY OTHER PROMINENT HOUSES in our Line 



AGAIN WE WISH TO CALL YOUR ATTENTION TO OUR 

 FACILITIES FOR THE 



DUTY FREE IMPORTATION 



OF 



Scientific Apparatus and 



Laboratory Utensils 



For Universities, Colleges, Schools, Etc. 



Our excellent connections abroad enable us to make 

 quick deliveries. We give you lowest prices and best 

 goods only. 



Carl Zeiss-, New Improved Laboratory QaotC Oil Yolir Next Year's Wants 

 Stand V. ~ — 



Stand VC with fixed stage, condenser. N. A. 1.20, iris diaphragm, 2 objectives 

 {A. and D.), 2 eyepieces {Huygh. 2 and 4) and double nosepiece. Price, Duty 

 Pree, $60.00, 



