April, 1920] PATHOLOGY L67 



98:1-528. 41 pl-, 14 fig. 1915.] Rev. EauxetFordts57:121 125. 1919. Thei 

 tation of the fumes given off by the smelter of the Selby Smelting and Lead Company iri 

 Solano County, California, were exhaustively Btudied by B large itafl I 



difficulty was found in determining the effect of sulphurous acid on treef than on annual 

 crops such as cereals. As a result of changes installed by the Company, the Comi 

 was able to state that there was no further danger of damage to vegetation 01 to the health 

 and comfort of the inhabitants. Both the report and investigation are worthy of imit.v 

 by French authorities in the reconstruction of factories in the devastated regions of 1 ranee. 

 It would be desirable for the State to require in new installations the purification or neutrali- 

 zation of all liquid or gaseous residues before they leave the works. [See Hot. ' try 

 513.]— S. T. Dana. 



1151. Artschwager, Ernst F. Histological studies on potato leaf-roll. Jour. Agric. 

 Res. 15: 559-570. PI. C and 85-45. 1918. — Potato plants of European and American origin 

 affected with leafroll were examined critically and are compared with healthy plants. [See 

 Bot. Absts. 2, Entry 67.]— D. Reddick. 



1152. Ashby, S. F. Budrot of coconuts. Jour. Jamaica Agric. Soc. 23: 23-25. 1919. — 

 As insurance against budrot the author advises selection of nuts from disease-free trees, re- 

 jection of any showing rot, destruction of all nuts not germinating within a reasonable time, 

 and the application of Bordeaux paste to the stalk end of the nuts before planting.— John A. 

 Stevenson. 



1153. Ashby, S. F. Late blight of Irish potatoes. Jour. Jamaica Agric. Soc. 23: 10-16. 

 1919. — A popular account of the symptoms and etiology of the disease. Most of the infection 

 in Jamaica is due to planting of diseased tubers. Temperature and moisture relations account 

 for infection of the winter crop in Jamaican lowlands and freedom from disease in the up- 

 lands. Summer crop is not often blighted due to higher mean temperatures. Bordeaux or 

 Burgundy mixtures are recommended. — John A. Stevenson. 



1154. Barrtjs, M. F. Seed improvement and certification. Potato Mag. I 10 : 10, 25, 34. 

 1 fig. 1919— See Bot. Absts. 3, Entry 919. 



1155. Batten, Lily, and Hubert W. Bywaters. Occurrence of mould in coacoa butter. 

 Amer. Jour. Pharm. 91: 112-115. 1919.— The authors report the presence of Penicillium 

 glaucum, a pink yeast, and what was believed to be Aspergillus oryzae in a 28 pound block of 

 cocoa butter. As cocoa butter is distinguished among fats by its resistance to influences 

 tending to produce rancidity and mouldiness, the authors deemed it noteworthy to determine 

 the nature of the fungus present. On breaking open the block of cocoa butter, drops of a 

 clear liquid, apparently water, were observed to be present in some of the larger vesicles. 

 Cultural experiments were then made with Aspergillus to note conditions which were fa\ 

 able for the growth of this fungus on cocoa butter. The authors report that cocoa butter 

 would not become mouldy if kept free from water, but, if water finds its way into cocoa but- 

 ter and especially if the water contains substances probably of a nitrogenous nature, which 

 can serve as food for the fungus, then there is real danger of the cocoa butter becoming 

 mouldy. (Reprinted from the Journal of the Society of Chemical Industry, July, 101^.)— 

 Anton Hogstad Jr. 



1156. Bessey, Ernst A., and Walter K. Makkmson. Notes on the control of rye smut. 

 Rept. Michigan State Bd. Agric. 1917: 305-307. 1917 (191S).— Rye was infected with Uro- 

 cystis occulta by rolling seed in spores before planting thus demonstrating that infer 

 takes place at the time of germination or shortly thereafter. Formaldehyde treatment of 

 seed prevented disease entirely. — G. H. Coons. 



1157. Brann, F. R. Factors concerning the drop of immature citrus fruit in centra'. Cal- 

 ifornia. Monthly Bull. Comm. Hort. California 2: 74-75. 1919— See Bot. Absts. 3. Entry 

 1057. 



