SCIENCE 



1 1991 



New Series 



Vol. LIII, No. 1361 



Friday, January 28, 1921 



Single Copies, 15 Crs. 

 Annual Sxjbsckiftion, 96.00 



Booklet and 

 Name Sched- 

 ules sent on 

 request 



The only American- 

 made Reagent Bottle ^["'"""'^^''^'"qTrlJ^SBHSS''^ Write today 

 with an S^ N/^Qiv*^'* ,J^BSHl^fe '<"■ copies 



Indestructible 



Bumed-in Enamel 



Ubel 



A^et of " Gramercy " Reagent Bottles can be kept up to 

 present at all times an unbroken and neat appearance. There 

 is no necessity for placing special solutions, put up in non- 

 descript bottles bearing unsightly paper labels, among other- 

 wise uniform reagent bottles, because " Gramercy " Reagent 

 Bottles can be had with blank labels which take pen or pencil 

 markings. Markings are easily erased. 



Brilliantly readable due to the large, clear Black letters on a 

 White backgroimd, " Gramercy " Labels are also truly inde- 

 structible; for the enamel will neitJher chip off nor become 

 scratched in use, nor be affected by acids or fumes. 



mEnd 



NEW YORK CITY 

 3rd Ave., 18th— 19th St. 



185 I ■■■■ 

 PITTSBURGH OFFICE 

 2011 Jackson Arcade 



