I208
F. G. WIECHBIXNN
reached I think it ivere well to prescribe the procedure at c e r t i n stages. But, after all, no zmount of careful attention t o any analytical process is of much avail unlgss the materials used are of good quality. Too many chemists, as appears from the replies furnished i n the present case, assume, without positive knowledge, that those used by them are satisfactor).; others report one or the other as of good quality without giving any quantitative data in support of such an assertion. S o chemist can be said to do justice to his employers or patrons who does not kiiow what order of error his results may include, arising from impurities in reagents and the solvent action of those reagents on his utensils, or from other causes either preventable or admitting of exact correction. Too often, beyond doubt, is a knon.n contamination thoughtlessly e s clutled as negligible n-hen, i n fact, a quantitative test might have sho~vnthe falsity of the belief.
FOURTH SESSION OF T H E INTERNATIONAL COMMISSION FOR UNIFORM METHODS OF SUGAR ANALYSIS. HELD I N BERLIS,
G E R M A N Y , JUNE
Re-eived September
22.
4, 1903.
1903.
The following \vert present : Professor Dr. A. Herzield, chairman. Privy cmncilor, Prof. Dr. Landolt, Berlin. Baron von Donner, chairman of the Vereiiz der at?%ZzLckeTh a d e 1 betheiligteit F i y v i c i i , Hamburg. Privy Councilor Koenig, chairman of the board of directors of the Vereilz der Dezrtscheii Zuckeriizdustrie, Berlin. Professor Dr. Brodhun, representative of the PhysikdischTeclzizisclze Keichsamtalt, Berlin. I’rofessor Dr. Schoenrock, i d e m , Berlin. Privy Councilor Professor Dr. von Buchka, delegate of the Kziserliche Reichssshatzaiiit, Berlin. Government Councilor 11-einstein, representative of the Knissrliclie ,Vormal Aiclzzuigsaiiit. Berlin. Government Councilor F . Strohmer, T-ienna, Austria.
METHODS OF SUGAR ANALYSIS.
I 209
J. Ragot, director of the Sytzdicat d e s Fabricants de Sucre de France. I
