From
Mr. E. J. Russell
311, Junction Road
London, N.
Ju[ly] 7/070
$13. Lawes Boppe Y.R.I.
Rothampstead
Mr. Mannvang was engaged Laboratory! Hothampstead for
many years and is well acquainted with the analysis of animal
compo...ewels. Lately he has been engaged with commercial analyses, and there is every reason to believe that he is fully competent to execute and instruct in this department of science.
(Signed) E. J. Russell