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ORIGIN AND UTILITY OF STANDARDIZED DRILLINGS. 193
" In connection with the use of the standardized drillings, I wish to say that I believe the plan will result in attaining greater accuracy, will inspire confidence, and will enhance the value of analytical chemical work in connection with foundry practice.
W. P. RICKELLS, Columbia University.' *
1' The standard samples are a grand idea and the confidence they impart is worth ten times the cost. W. G. SCOTT. ''
" I have noticed with pleasure your praiseworthy efforts to establish uniformity in pig iron analysis. . . . Thanking you for your endeavors to mitigate the perplexities of both the furnace manager and the chemist, JOHN P. MARSHALL,
Supt. Missouri Furnace, Carondelet."
" It is the greatest move for improvement in many years.
ERASTUS C. WHEELER,"
" We have checked our routine laboratory work from time to time since receipt of drillings and have found them to be of inestimable value to us. KITTANNING IRON & STEEL MFG. Co.,
W. L. Scott, Chemist.'*
" Permit me to express my belief that this work of your association of distributing carefully analyzed samples of pig iron is of great value to the metallurgists and chemists of this country.
H. L. MILLS,
Professor Analytical Chemistry, Sheffield Scientific School of Yale University."in sulphur and phc yphorus come from different chemists' standards not checking. J. O. MATHERSON, Chemist,