CHPJMISTKY. 441 



however, is no longer tenable. The cellulose, pentosans, lignin, and acetic acid 

 obtained from cane fiber are all hydration products, whi li in the parent substances, 

 are intimately combined. While, therefore, a study of the groups split off by 

 hydrolysis is our chiefest aid in investigating the problems of constitution, the mis- 

 take must not be committed of regarding the products obtained by chemical treat- 

 ment as absolutely identical with fiber constituents." 



The origin and formation of honey, and its relation to the polariscope, 

 W. A. Selser (Amer. Jour. Pharm., 76 (1904), No. 6, pp. 267-271).— -The formation 

 of honey by the bee is discussed and the results are reported of studies with the 

 polariscope of a number of samples of honey gathered in the western and south- 

 western United States with the object of securing data for the detection of adulter- 

 ated honey. 



Determining- the alcohol content of wine by means of its flashing point, 

 P. N. PvAIkow and P. Schtarbanow (Chem. Ztg., 28 (1904), No. 76, pp. 886-888).— 

 The author studied the flashing point of wine as a method for determining its alcohol 

 content and compared this with other methods. The discrepancies observed were 

 attributed to the presence of volatile compounds other than alcohol. Suggestions 

 are given regarding the interpretation of the results obtained by the flashing-point 

 method. 



The fatty oil of strawberries, I. Apakin (Zhur. Buss. Fiz. Kh.im. Obshch., 36 

 (1904), pp- 581-596; abs. in Jour. Chem. Soc. [London], 86 (1904), No. 502, Jf, />. 

 583). — According to the author's determinations, strawberry oil had a specific gravity 

 of 0.9345 at 15° and normal atmospheric pressure; at 25° it was 1.4790. The saponi- 

 fication number was 193.7; the acid number 6.41; the Reichert-Meissl number 2.1; 

 Hubl's iodin number 180.3. The oil contained 88.2 per cent insoluble fatty acids 

 having an iodin number of 192.3. Linoleic acid, about 81 per cent, linolenic acid, 

 about 10.5 per cent, and oleic acid were the principal acids present. 



Investigations of linseed oil and methods of protection of wood and iron, 

 1899-1903 (Copenhagen, 1903, pp. 107). — A preliminary report, issued by the 

 Danish State Technical Testing Laboratory, on methods of examination of linseed 

 oil, and on the value of methods of preservation of wood and iron by means of coal 

 tar, oil varnishes, and paints of different kinds. — f. w. woll. 



Extract from the flowers of iris as a sensitive indicator, A. Ossendovski 

 (Zhur. Russ. Fiz. Khun. Obshch., 35 (1903), p. 845; abs. in Zhur. Opuiln. Agron. [Jour. 

 Expt. Landw.], 5 (1904), No. 1, p. 132). — The author tested for its qualities as an 

 indicator an extract prepared from the petals of the Japanese iris, and found that 

 it affords the possibility of distinguishing mineral from organic acids, and mineral 

 from organic alkalis. Besides, the change of the color in neutralization takes place 

 gradually, passing a series of clearly distinguishable tones, which render this extract 

 especially serviceable. — p. fireman. 



The occurrence of aluminium in vegetable products, animal products, and 

 natural waters, C. F. Langworthy and P. T. Austen (New York: John Wiley & 

 Sons; London: Chapman & Hall, Ltd., 1904, pp- V-\-168). — "The material included 

 in this contribution to the bibliography of aluminium deals only with the occurrence 

 of this element in vegetable products, animal products, natural waters, and a few 

 miscellaneous materials, such as edible earths. The general purpose has been to 

 include only reference to such articles as report separate determinations of aluminium 

 or some of its salts, and to omit the very large number in which iron and aluminium 

 are reported together. ' ' 



The brief notes accompanying the references give the percentages of aluminium 

 reported in the different cases. 



" No attempt has been made to comment on the value of individual analyses cited, 

 as the object of the bibliography was the collection of data rather than the critical 

 examination of them." The bibliography contains 671 references to reports on the 



