SCIENCE-ADVERTISEMENTS 



NORMAL GROWTH 



wit 



Note the Normal Growth obtained with STANDARDIZED 

 Brewers' Yeast as Source of Vitamine-B; and TESTED COD 

 LIVER OIL-HARRIS as source of Vitamine-A. 



DIET 



Casein-Hdrris - 18/4 

 Crisco soy- 

 Corn Starch &&% 

 Salt Mixture 4,% 



I50m(5 CodLiylrOil- 

 M ARRIS daily furnished 

 Vitamine A 



We are supplying tested and 

 Standardized Vitamine and other 

 food elements to such Research 

 Institutions as the following: 



Johns Hopkins University 

 Yale University 

 Harvard University 

 Columbia University 

 University of California 

 Toronto University 

 University of Pennsylvania 

 U. S. Public Health Service, etc. 



AsJz for revised price list 



Materials for 

 Vitamine Studies 



To those interested in carrying 

 out scientific work in experimental 

 nutrition and bacteriology, we can 

 furnish standardized, biologically 

 tested vitamine and vitamine-free 

 preparations. 



Ye-5t Vitamine-Harris in Powdered 



V;tamine-fr 



Vitamine- free starch. 



Vitamine-free fats. 



Complete inorganic salt mix (Standard 

 formulae), or 



Complete food mixture, free from any 

 one Vitamine. 



We offer advice and services in experi- 

 mental feeding with especial relation to 

 the Vitamines. 



THE HARRIS LABORATORIES 



TUCKAHOE, NEW YORK 

 Chart showing Vitamine Content of Com- 



