112 SUGAK BEET SEED. 



tubes of 400 m. m. in length, 3 baskets to hold 20 flasks 

 each, 6 ether dropping flasks, 6 acetic acid dropping 

 flasks; a certain quantity of subacetate of lead, acetic 

 acid, nitric acid, filtering paper, etc., depending 

 upon the size of laboratory. For 10,000 analyses per 

 diem, the above would have to be doubled. M. Pellet 

 recommends that a certain number of flasks of 100 to 

 110 c. c. and 200 to 205 c. c. capacity be kept on hand, 

 so as to make comparative experiments by the hot and 

 cold methods; a certain number of sand baths are 

 always necessary. 



By the Hanriot method the apparatus necessary 

 is: 2 Hanriot apparatus, i sampler, i knife, 4 nickel 

 funnels, 2 water reservoirs, i balance, 2 small nickel 

 capsules (one-fourth normal weight), 500 flasks of 50 

 to 55 c. c. capacity, 500 funnels, 500 tumblers, 200 

 numbers with pinching attachments, i polariscope, 2 

 continuous tubes 400 m. m. in length, 3 baskets for 20 

 flasks, 6 ether dropping flasks and 6 acetic acid drop- 

 ping flasks. 



It is interesting to compare these with the prac- 

 tical working of the Legras laboratory mentioned in 

 previous pages. Under all circumstances, a good sup- 

 ply of chemicals, mentioned in foregoing, viz., ether, 

 acetic acid and subacetate of lead, are needed. For 

 10,000 analyses per diem these appliances must, in 

 nearly every case, be doubled. It is hardly necessary 

 to go into details of the numerous motors that are in 

 use or that have been suggested for laboratory work. 

 The principal point to be kept in mind, is, that 2000 

 revolutions of the Keil rasp, or the Hanriot apparatus, 

 must be maintained; otherwise, the work accomplished 

 M^ould be very poor in beet selecting; the root would 

 be so mutilated that its keeping would be almost 

 impossible. Most of the glass funnels, flasks and 

 tumblers could be furnished by most any dealer of 

 chemical appliances; it is, however, very essential 



