612 EXPEKIMENT STATION EECORD. 



A comparison of the analytical and calculated results in the estimation of 

 the dry matter in milk, G. Ambuhl {Chem. Ztg., 24 {1900), Xo. 81, pp. 871, 872) .— 

 The dry substance was calculated by the method of Fleischmann, and compared 

 with analytical results in 116 fresh and 1 and 2 day old samples of milk. In 96.5 

 per cent of the comparisons, the results differed less than 0.1 per cent. With 48 the 

 calculated results were greater than the determined estimated, in 54 less, while in 14 

 the results were the same in both cases. 



Detection of maize in wheaten flour, G. Embrey (Analyst, 25 {1900), Xo. 297, 

 pp. 315-317). — A discussion of methods. 



Beeswax, J. "Weeder {Chem. Ztg., 24 {1900), Xo. 89, jyp. 967, 968).— Studies of 

 methods of analysis and of waxes from various countries. 



The determination of free sulphuric acid in wines, F. Carpentieri {Staz. Sprr. 

 Agr. Ital, 33 {1900), Xo. 4, pp. 307-340). 



The adulteration of coffee with water and borax, E. Bertarelli {British Food 

 Jour., 2 {1900), Xo. 21, p. 242). — The author's observations were made on "Santos," 

 one of the inferior grades of coffee sold in Italy. Upon roasting this coffee its weight 

 decreases about 20 per cent; and some manufacturers, to make up this deficiency, 

 soak the berries in water containing borax, the borax being added primarily to 

 harden the coffee grains and prevent the detection of added water. 



"Whenever the moisture in roasted coffee exceeds 4 per cent, adulteration may be 

 suspected; and if borax is detected in the sample, the addition of water is certain, as 

 this salt is always added to disguise the addition of water." In examining low- 

 grade coffees one should always be on the alert for adulteration with water and 

 borax. — c. b. williams. 



Investigation of the Halphen color test as to its value for the detection of 

 cotton-seed oil, R. D. Oilar {Auu?,'. Chem. Jour., 24 {1900), Xo. 4, Jip- 355-373). 



The detection of methyl alcohol in mixtures, S. P. Mullikex and H. Scid- 

 der {Amer. Chem. Jour., 24 {1900), Xo. 5, pjp. 444-452). 



Progress of starch manufacture, H. Hanow {Chem. Ztg., 24 {1900), Xo. 82, pp. 

 889,890). — Gives statistics and late improvements in the methods of manufacture. 



Errors in experiments with calorimetric bomb, LrcioN {Ztschr. Angew. Chem., 

 1900, Xo. 36, jJ- 910). — The error due to the presence of traces of hydrogen in the 

 oxygen used in determining the heat of combustion of fuel is pointed out. 



The rapidity of the combustion in the calorimetric bomb, H. Thiele 

 {Ztschr. Angew. Chem., 1900, Xo. 25, pp. G07-G09, figs. ,9) .—The article has especial 

 reference to determinations of the heat of combustion of fuel. 



BOTANY. 



Hybrid conference report {Jour. Roy. Ilort. Soc. [Lo9ido7i], 24- 

 {1900), 2>2>. SJfS., figs. 12 If). — Besides an account of the arrangements 

 for the conference, a list of the principal plants exhibited, and accounts 

 of the conferences at Chiswick and Westminster, Jul}' 11-12, 1899, 

 the full text is given of the papers presented at the conference. The 

 following is a list of the papers: 



Hybrids and cross breeding as a method of scientific investigation, W. Bateson; 

 Fertilization of the genus Anthurium, M. dela Devansaye; The hybridizing of mon- 

 strosities, H. de Vries; HyVjridization and its failures, G. Henslow; Notes on some 

 experiments in hybridizing and cross breeding, C. C. Hurst; Work of the U. S. 

 Department of Agriculture on- plant hybridization, H. J. Webber; Structure of 

 certain new hybrids (Passifiora, Albuca, Ribes, Begonia, etc.), J. H. Wilson; 

 Hybridization viewed from the standpoint of systematic liotany, R. A. Roh'e; 



