From a Professor of "ORIjANIC" Chemistry. 



The following- analysis was published in the E. M. Journal, for 

 March, 1888: 



Massaciiusk'its [xs'i rrrxi-: of Technoucgv, 



Boston March 9th, 1887. 



The Wm. S. Merrelt. Chemical Co. 



Cincinnati, O. 



Gentlemen: — I have carefully examined the solution called 

 ''Lloyds Bj'dj-astis," supposed to contain Hydrastin, the white alka- 

 loid of Hydrastia. The sample examined was purchased from 

 R. O. & G. C. Wilson, of Boston. The solution is a glycerine 

 preparation. It contains Alumina and Magnesia, and traces of an 

 organic base, which may be Hydrastin ; — the quantity is too small 

 for determination. The white precipitate caused by the addition of 

 Ammonia-water to "Lloyd's Hydrastis" is a mixture of hydrate of 

 Alumina and hydrate of Magnesia, and is not an alkaloid. A pint 

 bottle of "Lloyd's Hydrastis" contained 19^ grains of. Alumina 

 and 15^^ grains of Magnesia. 



Yours very truly, 



Lewis M. Norton, 



[Professor of Organic Chemistry, 



Massachusetts Institute of Technology.] 



THE ABOVE ANALYSIS WAS BOUGHT, AND HE RESPECTFULLY 

 REFERS ALL QUESTIONS TO THE PURCHASER. 



[copy] 



Massachusetts Institute of Technology. 



Boston, March 12th, 1888. 



Lloyd Brothers, 



Cincinnati. 



Gentlemen: — In regard to all questions relating to the analysis 

 of the sample of hydrastis mentioned by you in your letter of March 

 8, 1888, I must refer you to the Wm. S. Merrell Chemical Co. of your 

 city, by whom I was employed to make the analysis. 



Yours very truly, 



Lewis M. Norton. 



Read Analysis on reverse, OTHERS WILL FOLLOW. 



