104 SUGAK BEET SEED. 



pies, I ; working sampler, i ; Hanriot appliance, with 

 assistants, 6; acetate of lead, ether, etc., manipulations, 

 2; juice measurers, 2; juice filtration, 4; carrying glass 

 jars, etc., 2; for the two polariscope observations, 6; for 

 classification of results, 2; arranging beets and general 

 cleaning, etc., 4. M. Legras says that under the con- 

 dition of the Laon environment with the laboratory at 

 the sugar factory, he can make an analysis of mothers 

 for three-fifths of a cent, which, however, does not 

 include cost of plant, etc., but is for labor and chem- 

 icals only. One fact is certain, that the cost of the cold- 

 water method of analysis is just one-half the cost of 

 the Fiihling or other oxide of copper modes. The 

 laboratory where all these observations are made 

 is 43x20 feet, a special space 9x9 feet being needed for 

 sample trays and for the three-horse-power engine 

 which works the sampler. These are very crowded 

 quarters, and would have to be very considerably 

 increased for 15,000 analyses per diem, as contem- 

 plated. To accomplish such extraordinary results in 

 so limited a time demands almost a military system of 

 working, since the goings and comings of so many 

 hands would mean great confusion and failure unless 

 all were well disciplined. 



(c) 4. Sachs' Direct Method. 



During the writer's visit to Brussels he was shown 

 in the Sachs laboratory a very much simplified cold- 

 water digestion mode for rapid beet analysis, arranged 

 by Sachs. It does away with flasks and many manip- 

 ulations which in reality demand far greater care and 

 precautions than was at first thought necessary. The 

 production of a very fine pulp with the Keil and DoUe 

 rasp introduced considerable volume of air into the 

 pulp, which is most difficult to get rid of, even with alco- 

 hol or ether. The errors may vary from 0.3 to i per 

 cent, of sugar, an item of considerable importance ta 



