420 EXPERIMENT STATION RECORD. 



New means of distinguishing between butter and margarin, J. Hoffmann 

 (Chem. Ztg., 21 {1897), No. 57, pp. 571, 572, fig.l). — This depends upon the form of 

 drops of ether or alcoholic solutions of butter and margarin Avhen allowed to fall 

 upon glass and on the amount of residues left behind. 



Analysis of cheese, E. J. Love (Chem. Ztg., 21 ( 1897), No. 52, p. 523). — The author 

 treats cheese with a small qiiantity of ether and then dries the residue at 100°, after 

 which it can he pulverized and completely extracted in a Soxhlet extraction appa- 

 ratus. The residue is brought upon a tared filter, dried, and weighed : and the ether 

 extract is dried and weighed as fat. The difference between 100 and the sum of the 

 ether extract and of the residue of cheese represents the liquid constituents. 



The recognition of margarin in cheese, H. Bremer (Forsch. Ber. Lcbensmtl., 4 

 (1897), No. 3, pp. 51-53). 



A simple new iodometric method of estimating sugar, K. B. Lehmann (Arch. 

 Hyg., 30 (1897), No. 3, p. 267). 



The quantitative determination of nitric acid by electrolysis, K. Ulsch (Ztschr. 

 Electrochem., 3 (1897). i>. 546; aba. hi Chem. Ztg., :l (1897), No. 71. Bepert., p. 192). 



The rapid estimation of uric acid in urine, E. H. Bartley (Jour. Amer. Chem. 

 Soc, 19 (1897), No. 8, pp. 649-656). 



On the spectroscopic detection and determination of potassium, E. A. Gooch 

 and T. S. Hart (Amer. Jour. Sci., 42,p. 448). 



On the determination of caffein in coffee, E. Tassilly (Bui. Soc. Chim. Paris, 3. 

 ser., 17 (1897), No. 15, pp. 761-768). 



Determination of formic aldehyde, G. Romijn (Ztschr. analyt. Chem., 36 (1897), 

 No. 1, p. 18). — The author prefers the iodometric method for pure solutions of formic 

 aldehyde. If the presence of other aldehydes is feared the potassium-cyanid method 

 is used, often in combination with the iodometric method. The methods of Brochet 

 and Cambier are also recommended. — B. w. KILGORE. 



A further communication on the estimation of phosphoric acid by titration 

 of the ammonium phospho-molybdate precipitate with standard alkali, B. W. 

 Kilgore (Jour Amer. Chem. Soc, 19 (1897), No. 9, pp. 703-711).— This is the same as 

 the article published in Bulletin 140 of the North Carolina Station. (See page 416.) 



The detection of coloring matter in sausage, H. Weller and M. Riegel (Forsch. 

 Ber. Lebensmtl., 4 (1897), No. 8, pp. 204, 205). 



Detection of sulphocyanates, C. L. Pknxy (Delaware Sta. Bpt. 1896, pp. 158, 

 159). — A method is described for the detection of sulphocyanates. 



Hygienic studies of copper: Method of estimating small quantities, K. B. 

 Lehmanx (Arch. Hyg., 30 (1897), No. 3, p. 250). 



Method of collecting and analyzing the gases of canned goods, C. A. Doremus 

 (Jour. Amer. Chem. Soc, 19 (1897), No. 9, pp. 7SS-735,fig. 1). 



The composition of nicotin, V. Oliveri (Atti. Staz. chim. agr. Sper. Palermo, Bap. 

 1898-'95, pp. 31-47). 



BOTANY. 



New species of fungi, .T. B. Ellis and B. M. Everhart (Bui. Torrey Bot. Club, 24 

 (1897), No. 10, pp. 457-477).— Descriptions are given of a miscellaneous lot of fungi 

 from many localities. 



New species of North American fungi, J. B. Ellis and B. M. Everhart (Bui. 

 Torrey Rot. Club, 24 (1897), No. 6, pp. 277-292). 



Mexican fungi, E. W. D. Holway (Bot. <!a:., 24 (1897), No. 1, pp. 28S8).—8otea 

 and descriptions are given of numerous species of parasitic fungi from Mexico. 



Fungi for class demonstration, W. G. P. Ellis (Ann. Bot., 11 (1897), No.42,pp. 

 333, 334). 



Some cryptogams found in the air, S. E. Jelliffe (Bui. Torrey Bot. Club, 24 

 (1897), No. 10, pp. 480,481).— A list is given of 4 species of Saccharomycetes, 5 of 

 Mucorini, and 19 of Hyphomycetes that occur as contaminations in bacterial cul- 

 tures. They have all been grown on Petrie dishes. 



