20 EXPERIMENT STATION RECORD. 



Estimation of nitrates and nitrites as nitric oxid. J. Coteatt Ztsekr. Angeic. 



itraci "f the preceding paper. 

 Determination of nitric acid by electrolysis, K. UUBt a [Ztsekr. EleJetrot 



- . [London — 



The nita • - jeminormal sulphuric acid is reduced to ammonia, as g 



copper cathode and platinum anode. The method described is applicable only to 

 pur.- nitrates blorida and other substances naturally occurring in nitrates 



interfere with it- accora 



The direct determination of potassium carbonate in salt. A. ACLARD 



■'mat. Chim. Appl., 1896, 1, pp. 154- .— This ia Heyer'a method completed 

 and modified in some details. 



The determination of animal and vegetable fats, T. Tayix>R .. t ongres Internet. 

 Chim. . ,1V, pp. S87S40, pit 



Study on the determination of tannins. F. AGLOT ':. Congres Internat. Chim. 

 Appl., 1896, III, pp. 1-'.' ■ — See below. 

 Studies on the estimation of tannin, E. Allot Ztsekr. Angeic. Ckem., 

 pp. 181-183). — The author reviews the various methods employed for tl 

 mation of tannin, call- attention to their weak points, and offers suggestions, based 

 upon his work, for their improvement. — j. B. lutdset. 



Determinaticn cf copper in vegetable substances, B. H. Pail and A. J. Cowh- 

 ; i - i .' /• at. Falsi/., 11 (!■:•■ . No. 1 Ztsckr. Angeic. • 



No. 2 . 

 Detection of copper in canned peas, Boomer and Moor [Bee. Internat. Falsi/., 



; ab*. in Ztt ew. Ckem., 1898, No. 14, p. 



The determination of ergot of -wheat in flour, A. Muxes Her. Internal. Falsi/., 

 11 (1898), Xo. l,p. 20; abs. in Ztsckr. Angew. Ckem., 1898, No. 14, p. 



The detection of formic aldehyde in feeding stuffs, A. Jorissem Rev. Internat. 



., 11 (1808j, Xo. l t p. 12; abs. in Ztschr. Angeic. Ckt 

 The total nitrogen in urine, L. Moxkkt 9. Congres Internat. Chim. Appl.. I 

 IV. pi>. 67- . — A modification of the Kjeldahl method >aid to be very exact is 

 reported. The substance is oxidized with fuming Xordhan.sen sulphuric acid and 

 manganese dioxid. and the resulting ammonium sulphate is decomposed by means 

 of a strong solution of alkaline sodium hypobroruite. the resulting nitrogen being 

 measured in a eudiometer. 

 On FebJing's solution, M. Z. JovrrsCHrrscH Neue Ztsekr. Ribenz. Ind. 



The author shows that Fehliug's solution is reduced by min- 

 eral acids, H>« > . HN< » . and HC1, when these are added in such quantities that the" 

 solution still gives an alkaline reaction with litmus paper, and explains it by a 

 decomposition of the tartaric acid by the stronger acids. This change also takes 

 place when Fehliug's solution is kept for a length of time in well-stoppered glass 

 - — I . W. WOIX. 

 Ash of Gidgea acacia (stinking wattle , F. B. Guthrie Anr. Caz. 

 Wales. S ."• •: abs. in J 5 London]. 74 {1898), No. 



71, potash 0.6. soda 0.72. phosphoric acid 1.47 

 per cent. The dry mutter of the leaves contained 26. 9J per cent of protein. 



Composition of the ash of canary seed, T. S. Hofmax (Landbonw. Tijdsehr.,5 



- [London. ." II, [,.186). 



A new process for determining starch in the grain of cereals. L. Lixoet :. 



• Internat. C 'tm. Appl., 1896, II, pp. ':. 71 .— Seep.17. 

 New extraction apparatus for the determination of fat, Louise .. Congres 

 Int'Tnat. (.'him. Appl., 1896, ll,p\ .1). 



Apparatus for rapid and accurate determination of milk fat, F. M. Arxdt 

 {Miles Zt<j.. —The apparatus is intended to facilitate the 



determination of fat in milk by the Krug-Hampe method absorption of milk by 



Zt?. i.r. Angew. Chem.. 1894, p. 683. 



