«Id> 



^ 



u 



Fig. 35. Reaction 

 vessel in holder. 

 From Linderstr0m-Lang 

 and Holler (1933a) 



W V 



10 



'-20 mm 



Fig. 36. Centrifuge 



reaction vessels. 

 From Norberg (1937) 



rO 



"-10 cm. 



Fig. 37. Arrangement for removing 



supernatant fluid over a precipitate. 



From Norberg (1937) 



■ 5 mm 



// w 



^WA 



Fig. 38. 



(r\ 



Ml 



-^ -^-S mm. 



Fig. 39. 



\y 



Fig. 40. 



Fig. 38. Reaction vessel for iodometric titration. In neck, lower film is 

 sulfuric acid, upper film starch solution. From Holler and Doyle (1938) 



Fig. 39. Kjeldahl digestion tube. From Levy (1936) 



Fig. 40. Vessel for ammonia distillations (no longer used). From Ldnder- 

 str0m-Lang, Weil, and Holler (1935) 



