No. l. October, 1920] unclassified publications 65 



MISCELLANEOUS, UNCLASSIFIED PUBLICATIONS 



B. E. Livingston, Editor 



468. A., B. C. [Rev. of: Wintbbbottom, D. C. Potash — an investigation into its eco- 

 nomic sources in South Australia, etc. Dept. Chem. South Australia Bull. 2. 84 p- 1916.] 

 New Zealand Jour. Sci. and Tech. 1: 124 126. March, 1918.— Under "Potash from plants^" 

 author gives analysis of a number of Bubsl ances examined in laboratory of his department, 

 from which it appears that the woods of various species of Eucalyptus yield an ash which may 

 contain from 1.25 to 5.20 per cent of potash Me concludes from his analysis of various garden 

 plants, bracken fern, etc., that the plant life of Australia has generally a lower potash content 

 than that, of European countries. The following Australian seaweeds were examined and 

 found to have percentage of potash contents as indicated: — Posidonia australis, 0.6; Macro- 

 cystis (Keep), 6.0; EchUmia radiata, 10.0; Scriococeus axillaris, 10.2. — The last two samples 

 contained an appreciable quantity of iodine. Macrocystis pyrifera is abundant along rocky- 

 coasts of New Zealand. Ecklonia radiata is common along shores of Nortli and South islands 

 of New Zealand. Reports also on derivation of potash from wool, and the recovery and 

 purification of wool-fat from the wool-scouring process. — S. S. Gager. 



•109. B., L. [Rev. of: Smart, B. J., and P. Pecover. Investigations regarding heat- 

 insulating materials. Commonwealth Engineer 5: 127-132. Dec., 1917.] New Zealand 

 Jour. Sci. and Tech. 1: 186-187. May, 1918. Gives quantitative data concerning marine 

 fiber (Posidonia australis) and other plant and mineral products and substances. [See also 

 Bot. Absts. G, Entry 472.]— C. S. Gager. 



170. Hickey, J. P. The diagnosis of the more common helminthic diseases of man. Pub- 

 lic Health Reports [U. S. A.] 35: 1383-1-400. 1920.— Refers to the necessity of distinguishing 

 spores of cryptogams from eggs of helminths in the examination of stools and gives some spe- 

 cific details. — C. E. F airman. 



471. Holste, G. [Rev. of: Bucher, H. Die Heuschreckenplage und ihre Bekampfung. 

 Combating the locust plague.) Zeitschr. angew. Entomol. (Supplem. 3). 1918.] Forstwiss. 



Centralbl. 41 : 336-338. 1919. — Plagues of the native locust (Stauronotus maroccanus) in west- 

 ern Anatolia, and of the African locust (Schizocerca peregrina) in Palestine and Syria seriously 

 threatened the crops of those regions during the war. German scientists were called in to 

 assist in checking the damage, and finally succeeded by trapping the locusts in ditches dug 

 along a wall of zinc plates 30 cm. high. — W. N. Sparhawk. 



472. J., S. H. [Rev. of: Winterbottom, D. C. Marine fibre. Dept. Chem. South 

 Australia Bull. 4. SG p. 1917.] New Zealand Jour. Sci. and Tech. 1 : 127. March, 191S.— 

 Author records beds of Posidonia australis (a marine spermatophyte) averaging about 10 ft. 

 deep. There are in sight nearly 5,000,000 tons that can be sold profitably at £25 per ton. 

 Reviewer states that he has used Posidonia very successfully as a heat-insulating material 

 in refrigeration, with better results than with slag wool, pumice, hairfelt, boiled paper, and 

 various sawdusts. The material is recommended also for boiler and pipe covering. [See also 

 Bot. Absts. 6, Entry 469.]— C. S. Gager. 



473. Sanderson, T. The bread value of wheat. North Dakota Agric Exp. Sta. Bull. 

 137. 45 p. 1920. — The author presents certain baking coefficients devised by him to be 

 applied to the value of the milled flour. These are concerned with water absorption of flour 

 and volume, color and texture of loaf. The value of the flour being fixed by these various 

 factors, the market value of the wheat becomes fixed in turn. Using the standards given, 

 the author finds that the wheat values thus secured are not correlated at all with the com- 

 mercial values which the trade assigns to the federal grades. In fact, the author states that 

 some of the lowest commercial grades of wheat really had as high milling and baking values 

 as the higher grades of wheat, in certain seasons. The author states that if the proposed 

 coefficients are fair, it follows that the money loss to the farmers through the present system 

 of wheat marketing is very great. — L. R. U'uhlron. 



