192 



Composriion ofpeanvl-hull meal. 



Mlnunuin. 



Maximum. 



Average. 



Water 



Ash 



Crude cellulose 



Crude fat 



Crude protein. 

 Carbohydrates 



Percent. 

 7.26 

 3.83 

 48.87 

 3.46 

 7.64 

 15.88 



Per cent. 

 8.58 

 14.31 

 58.96 

 5.65 

 8.97 

 16.85 



Per cent. 

 T.9,5 

 10.15 

 5:i.66 

 4.11 

 8.2.3 

 16.33 



The coefficient of digestibility for t lie inoteiii, as indicated by Stutzer's 

 method, was found to be rwl.'l ]h'v cent in one >;;mi|tl<' and -KI.S ]»cr cent 

 in another. 



Time of extraction of paper coils in milk analyses by the 

 Adams method, P. Vieth \AiKth/.st. in ^l.^'.il), p. J;.^>), — Test.-^ of the 

 '•fat free" paper, piepaicd for milk analysis by Schleicher and Schiill, 

 showed it to contain O.Oi'TS ])er cent of ether extract, or 0.(H*."> per cent 

 when the paper was moistened with dilute acetic acid and then dried 

 before extraction. The latter indicates the absence of any material of a 

 soapy nature. The avcrajic amount (»f ether extract from a strij) weigh- 

 ing grams is therefore 0.0(H(> gram, which would increase the results 

 of a fat determination by 0.03 per cent, "provided the same amount 

 which is extracted in a blank experiment is also got out after ."> grams 

 of milk have been dried on the pajter, I am not at all sure that the 

 latter is the case." 



With reference to the length of time the ether extraction of the paper 

 coils containing the absorbed milk is to l»e continued, the author made 

 the following experiments: Two samples of milk, one of whole and one 

 of skim milk, were extnicted for ditlerent lengths of time with the fol- 

 lowing results in per cent of fat: 



Time of extraction. 



Whole milk. Skim milk. 



Ihonr ' 3.48 



2 hours ; 3. .50 



3 hours ! 3. 54 



4 hours 



0.28 

 *l. 30 

 0.28 

 0.28 



111 six samples (three of whole and three of skim milk) the number ot 

 siphonings as well as the time of extraction was noted, the object being 

 to find out the shortest time required for extracting the fat. Tli«» results 

 follow : 



Xumber of siphonings. 

 Tiuie (uiiuntes) 



Sample 

 No.l. 



Sample 

 No. 2. 



41 



Sample 

 No.3. 



6 9 



47 I 41 



Sample 

 No. 4. 



Sample 

 No.B. 



6 9 

 46 64 



Sample 

 No.<. 



Per cent of fat 0. 28 0. 24 0. 28 0. 22 0. 24 1. 24 0. 24 0. 24 0. 26 4. 18 4. 14 4. 24 3. 543. 68,3. 68 2. 84 2. 88 2. 90 



