No. 2, September, 1920] PATHOLOGY 275 



2101. Stuart, G. A. D. Mycology and operations against disease. Rept. Dcpt. Agric. 

 Madras 1917-18: 17-20. 1918. An account of the progress in the study and control of: sec- 

 ondary leaf fall of Hcvea; a disease of paddy, variety korangu samba (caused by Piricularia 

 oryzac); bleeding; disease of coconuts; rot of stored potatoes; Palmyra disease; and Mahali 

 disease on Arecapalm nuts. — The cause of secondary Leaf fall in II < vt a is Phytophthora meadii . 

 which differs from a somewhat similar fungus reported brom Ceylon. — ./. I. Lauritzen. 



2102. Stuckey, H. P., and B. B. Higgins. Spraying peaches. Georgia Agric. Exp. Sta. 



Bull. 135: 91-101. 1920. — The bulletin discusses briefly peach diseases and peach insects and 

 recommends formulae for controlling sprays. The effects of commercial lime-sulphur upon 

 peach foliage is discussed, the results being obtained from experiments with six plats of Klberta 

 peaches. Solutions of the following; densities were used: 1.003, 1.004, 1.005, 1.006, 1.007, 

 1.008 specific gravity. Five days after application, the following conditions were found: 

 (I) sprayed with lime sulphur of specific gravities 1.003 to 1.004, not injured ; (2) 1.005 burned 

 about 5 per cent of the leaves and these fell from the trees; (3) 1.006 approximately 10 per 

 cent of the leaves injured and fallen; (4) 1.007 and 1.008 did not cause the leaves to fall but 

 burned holes where the droplets of spray collected. — T. H. McHatton. 



2103. Thomas, P. H. Annual report of the Assistant Fruit and Forestry Expert. Tasmania 

 Agric. and Stock Dept. Rept, 1918-19: 19-20. 1919.— See Bot. Absts. 5, Entry 1777. 



2104. Thow \s, Roy C. A new lettuce disease. Monthly Bull. Ohio Agric. Exp. Sta. 5: 

 24-25. 1920. — A brief note is given of the discovery of a disease of lettuce new to Ohio 

 observed in lettuce grown under glass. The causal organism is a bacterium which attacks the 

 roots of the plants gaining entrance when they are young seedlings, or when unfavorable cul- 

 tural conditions result in a checking of growth. Preliminary investigations indicate that the 

 disease is similar to one previously reported from South Carolina, — R. C. Thomas. 



2105. Uichanco, Leopold B. A biological and systematic study of Philippine plant gall. 

 Philippine Jour. Sci. 14: 527-554. 15 pi. 1919.— In the present paper only the galls caused 

 by the action of animals, and known as zoocecidia are taken into consideration, which may 

 be caused by insects and arachnida, as practically no work has been done on the galls in the 

 Philippines. This was a virgin field. Fifty-seven species of galls were described and drawn or 

 photographed and the insects were reared from them. — Albert R. Sweetser. 



2106. Vochting, Hermann. Untersuchungen zur experimentellen Anatomie und Path- 

 ologiedesPflanzenkorpers. II. DiePolaritatderGewacb.se. [Experimental anatomy and path- 

 ology of the plant body. II. Polarity.] vi + 838 p., 12 pi., 118 fig. Tubingen, 1918.— Review by 

 O. Von K[irchner] in Zeitschr. Pflanzenkr. 29: 242-249. 1919 (1920). 



2107. Von K[irchner], O. [Rev. of : Vochting, Hermann. Untersuchungen zur experi- 

 mentellen Anatomie und Pathologie des Pflanzenkorpers. II. Die Polaritat der Gewachse. 

 (Experimental anatomy and pathology of the plant body. II. Polarity.) vi -f- 338 p., 12 pi., 

 118 fig. Tubingen, 1918.] Zeitschr. Pflanzenkr. 29: 242-249. 1919(1920). 



2108. Waterhouse, W. L. A note on the over-summering of wheat rust in Australia. 

 Agric. Gaz. New South Wales 31: 165-166. 1920. — Observations indicated that volunteer 

 wheat plants probably serve as an important medium in carrying over the rust Puccinia 

 graminis. Uredinia were formed at intervals during the summer months. — L. R. Waldron. 



2109. Weck, R. Saatgutbehandlung der Wintergerste. [Seed treatment of winter barley.] 

 Illustrierte Landw. Zeitg. 39: 315. 1919. 



2110. Whitehotjse, W. E. Cold storage for Iowa apples. (Third progress report.) Iowa 

 Agric. Exp. Sta. Bull. 192: 181-216. 14 fig. 1919.— See Bot, Absts. 5, Entry 1787. 



