706 EXPERIMENT STATION RECORD. 



The effect of alkali on orcliard ti^ees is discussed, and the injuries 

 are grouped as follows: (1) The burning of trees by excessive alkali 

 Avhich accumulates on the surface of the ground; (2) injury to the root 

 hairs; (3) injuries caused by the accumulation of alkali salts in various 

 parts of the plants; and (4) by the radiating power of alkaline soils, 

 the strong radiation often seriously burning the edges of the leaves. 



The effect of moss and lichens on trees, producing the injury gener- 

 ally known as hidebound, is described, and the use of winter washes 

 containing caustic alkalies is recommended. 



On the use of Jensen's hot-'water treatment for millet smut, 

 K. Adeehold {J)er Landn-irth^ 1S9G, JVb. 9 ; ahs. in Bof. CcnthL, 07 

 {189G), Ifo. 9-10, pp. 310, 311). — A comparison is made between the 

 millet seed treated with copper sulphate solution and then limed, and 

 seed subjected to the Jensen hot-water method for prevention of 

 smut. It is stated that when the extra care and labor entailed by the 

 hot-water treatment are considered the results do not warrant its 

 recommendation as superior to copper sulphate and lime for the 

 prevention of millet smut. 



A new species of Puccinia on Polemonium coeruleum, C. >STOERMEn [Hot. 



Notiser, 1S9C, p. 214). 



The cutting bench fungus, Ii. AVeber {Florlsls' Exdian<je, 9 {1S97), No. 9, p. 192). — 

 The author briefly describes the injury dcrue to plauts aud suggests thorough 

 ventilation and due regard to temperature as preventive means to be adopted. 



A study of the gummosis of Aralia spinosa, L. Lutz {Bui. Soc. Bof. I'rnncc, set: 

 3, 3 {1896), No. S, p/p. 513-510). 



Yellowing of sugar beets, M. J, Troude (Sucr. Tndg., 1S9G, p. 338; ahs. in Bot. 

 Cenihl., 69 (1897), No. 2-3, pi. 82). — A desi-riptiou is given of a yellowing of the 

 foliage of sugar beets in June. The cause was thought to be physiological and is to 

 be investigated further. 



Cladochytrium pulposum parasitic on sugar beets, P. Vuillemix (7>«/. Soc. Bot. 

 France, ser. 3, 3 {1896), No. 8, pp. 497-'>0~i). — This parasite is considered as probably 

 the same as the (Edomyces JeproUhs of Trabut and in addition to attacking the sugar 

 beet it is reported as being parasitic on Atriplex patxila, Chinopod'iam rnhrum, C. 

 urhicnm, and C. (jlaucum, as well as the wild Jieta vulgaris in Algeria. The author 

 states that the analogy claimed to exist between this fungus and the Ustilagina? is 

 without foundation in fact. 



Notes on beet pests in 1896, M. Hollrun(i {Ztschr. Ver. L'iilmiz. Ind., 1896, Dec, 

 ])p. 928-938). 



The bacteria of sugar cane, Debray {('ompt. Bend. Soc. Biol. Bar is, 1896, Nov. 

 11). 



An apple disease, E. Prillieux {Bui. Soc. Bot. France, ser. 3, 3 {1896), No. 8, 

 p. 600). — Notes are given on a peculiar watery or vitreous appearance of apples, 

 often two-thirds of the surface being involved. Examinations were made and bac- 

 teria cultivated from some of this abnormal tissue, and it is thought that the disease 

 is due to these organisms since the sound tissue sooner or later becomes infected. 



Prune rust {Pacific Tree and Tine, 13 {1897), No. 47, p. iC.?).— Winter spraying 

 with copper sulphate solution followed in summer with Bordeaux mixture or eau 

 celeste and piitting trees in good condition of growth by use of fertilizers are 

 recommended as efficient means for combating this disease. 



