July, 1918 C. U. C. P. ALUMNI JOURNAL 119 



Conducted by Prof. George C. Diekman. 



Deterioration of Lime 



S. A. Woodhead, in Analyst, 1913, 43, states as follows: If powdered lime 

 be kept in dry storage, and fresh surfaces frequently exposed, 43 per cent, of the 

 mass will be converted into carbonate during 64 days. Lime exposed for a period 

 of 4 months, without turning, and in open air, was converted to the extent of 12 

 per cent. only. Lime is masses stored in bags, and protected from moisture, was 

 converted into carbonate to the extent of 38 per cent., but when the masses were 

 heaped and exposed to air, the loss was 52 per cent. 



Haematoxylon Africanum 



In 1909 a species of Haematoxylon was discovered in Great Namaqualand, 

 South-Africa. This species consists of a shrub-like plant, from i to 1.5 meters in 

 height, with leaves smaller than those of Haematoxylon campeachianum, and 

 bearing yellow flowers. The stems consist chiefly of a reddish-brown central 

 portion, surrounded by a nearly colorless layer of woody fibre, and are from .5 to 

 1.25 inches in diameter. The central core upon exposure to air darkens consider- 

 ably as is the case with logwood. An extract prepared from this plant, yields 

 color reactions more closely resembling those of Brazil wood, than those of log- 

 wood. With ferric chloride a brown color is noted and with lead acetate a precip- 

 itate possessing a pale pink color is formed. Mordaunted wool when treated with 

 the extract of this plant, showed colors similar to those obtained upon treatment 

 with Brazil wood, but duller in appearance, and deficient in the red constituent. 

 A. G. Perkins, in /. Soc. Dyers & Col., 1918, 34, claims the extract obtained from 

 this plant is of no technical importance. 



Oil from Liver of Dog Fish 



A pale-yellow oil, which at 10° C. becomes semi-solid, because ,of the sepa- 

 ration of solid glycerides, is obtained when the liver of the ordinary dog fish 

 (Squalus acanthias), is extracted with steam under pressure. The yield is from 

 40 to 50 per cent. Two samples of this oil, obtained from different lots of dog 

 fish livers, were found to possess the following physical and chemical qualities. 

 Specific gravity, at 15° C, 0.9175 and 0.9186; refractive index at 20° C, 1.4755 

 and 1.4749; saponification value, 161 and 168.3; iodine value, (Wijs), 123.3 and 

 123; free fatty acids, calculated as oleic acid, 0.33 per cent, and 0.42 per cent.; 

 unsaponifyable matter, 32.94 per cent, and 49.48 per cent. These results were 

 obtained from oils which had been cooled and the solid matter separated. A. C. 

 Chapman, in Analyst, 1918, 43. 



