AGEICULTURAL CHEMISTRY AGROTECHNY. 417 



Detection of sulphured barley and malt, J. Brand (Abs. in Chem. Ztg., 34 

 {1910), No. 61, p. SJfO). — The author utilizes the usual distillation method with 

 phosphoric acid and collects the distillate in xoo-iioi'iiiftl iodiu solution. One 

 hundred giu. of sulphured malt required 1.2 to 3 cc. of the iodiu solution, while 

 unsulphured malts required only 0.,3 to 0.4 cc. 



Determination of phosphoric acid in cereals, P. Carles (Proc. Verb. Soc. 

 8cl. Plnjs. et Nut. Bordeaux, tDOS-9, pp. 2, 3). — The method proposed is as 

 follows : Take equal amounts of the cereal and potassium nitrate, and one-tenth 

 the amount of sodium bicarbonate, and add in fractions in a platinum dish at a 

 red heat. When the deflagration has ceased, allow to cool, and extract with 

 water, dry the filter, and incinerate the residue. After dissolving the residue 

 in dilute nitric acid, unite the two filtrates, fill up to a definite volume, and 

 determine the phosphoric acid in aliquot portions. 



A rapid method of determining crude fiber, J. M. Pickel {Jour, Indus, and 

 Engin. Chem., 2 {1910), No. 6, pp. 2S0, 281, fig. 1).—A modified method of digest- 

 ing, filtering, and washing crude fiber. The washing and filtering is done by an 

 upward suction through a wide-mouthed thistle tube which has at its extremity 

 a piece of fine mesh linen (32 by 32 threads per square centimeter). Illustra- 

 tions of the various stages of the process are shown. The results obtained with 

 the method are considered good. 



The determination of crude fiber, G. M. Macnider {Jour. Indus, and Engin. 

 Chem., 2 {1910). No. 6, pp. 2S1, 2S2). — A modification of the above process. 



A new quantitative method for cellulose, R. Dmochowski and B. Tollens 

 {Jour. Landw., 58 {1910), No. 1, pp. 1-20). — This is a combination of the Hen- 

 neberg crude fiber method and the nitric acid method Jipplied to the estimation 

 of cellulose. 



Cellulose digestion in domestic animals, W. Grimmer and A. Scheunert 

 {Berlin. Tierdrztl. Wchnschr., 26 {1910), No. 7, pp. 152, 153).— In an article 

 previously noted (E. S. R., 22, p. 474) attention was drawn by one of the above 

 authors to the fact that the work reported by Lohrisch fE. S. R., 21. p. 265) was 

 based on an error due to defective methods of cellulose determination. This 

 article presents the results of an investigation of tlie method employed by 

 Lohrisch and shows that the cellulose is attacked to quite a degree by the 

 potassium hydroxid and hydrogen peroxid employed. 



Apparatus for the estimation of cellulose, A. Gregoire and E. Carpiaux 

 {Bui. Soc. Chim. Belg., 2Jf {1910), No. 5, pp. 217-221, fig. i).— A description of 

 an apparatus for washing and filtering off the residual cellulose in cellulose esti- 

 mation for feeds, etc. 



Spanish paprika, A. Lowenstein and W. P. Dunne {Jour. Indus, and Engin. 

 Chem., 2 {1910), No. .'/, pi). 139-1J,2). — Analytical data are reported and dis- 

 cussed with reference to judging the quality of paprika. 



Studies of the reactions due to the colloidal state of curdled milk, F. Bordas 

 and Toui'LAiN {Compt. Rend. Acad. Sci. [Paris], 150 {1910), No. 6, pp. S'fl- 

 5//3).— Curdled milk heated to 110° C. is not capable of decomposing hydrogen 

 peroxid, nor does it give a blue coloration with paraphenylenediamin, but if the 

 casein is brought to a finely divided state the catalytic action returns. This is 

 not due to peroxidase hut to a colloidal state of the casein. 



The detection of palm fat in butter and lard and lard in butter, E. Ewers 

 {Milchic. ZenthL, 6 {1910). No. -',, pp. 15.'i-11 1 ; Ztschr. Offentl. Chem.. 16 

 {1910), Nos. 7, pp. 131-1J,1; 8. pp. lJfl-152).—ThQ author investigated the phys- 

 ical and chemical methods for this purpose, and concludes that from the dis- 

 tillate-magnesium number and the petroleum-ether-magnesium number it is 

 possible to detect 10 per cent of palm fat in butter. The saponification num- 

 ber can be determined at the same time. In lard it is possible to detect at 



