568 EXPERIMENT STATION RECORD. 



"(4) Of the three fungicides used, corrosive sublimate is the only one which can 

 be recommended as a preventive of potato scab. Its efficiency is diminished by the 

 presence of the fungus in the soil. 



"(5) Infested land is to be avoided in planting potatoes. If its use is unavoid- 

 able, the selection of clean seed and treatment of the same with corrosive sublimate 

 will enhance the value of the crop." 



In the last experiments, made to test the comparative value of fresh 

 and composted manure in favoring- the development of potato scab and 

 of corrosive sublimate, lysol, and sulphur in preventing scab upon clean 

 land, clean seed was used in the experiment with barnyard manure and 

 scabby seed in the other trials. Comparative tables are given showing 

 the effect of the different treatments in which it appears that barnyard 

 manure as a fertilizer for potatoes tends to produce scab upon the crop 

 and consequently should be avoided. The results secured with lysol 

 and sulphur confirm those given above. 



Notes on the so-called shelling of grapes, W. C. Sturgis (Conned lent Stale Sta. 

 Iipt. 1S96, pp. 278-281). — The author briefly reports upon the character, cause, and 

 probable prevention of this disease, which has previously been reported upon in 

 Bulletin 76 of the New York Cornell Station (E. S. R., 6, p. 732). 



The soft spot of oranges, R, E. Smith (Hot. Gaz., 24 (1897), No. 2, pp. 103, 104, 

 pi. 1). — The cause of the well-known soft spot or decay of oranges is determined to 

 be a species of Penicillium. The described species with which it most nearly agrees 

 is P. digitatum. 



Moist atmosphere and close packing of the fruit favor the development of the 

 fungus. 



On a leaf blight of melons, W. C. Stvrgis (Connecticut State Sta. Rpt. 1S9G, pp. 

 267, 268). — A leaf blight of melons is described which appears to be due to a dis- 

 turbance of equilibrium existing between the absorption of water by the roots and 

 its evaporation from the leaves. Under the circumstances it is said to be difficult 

 to offer any suggestions for the prevention of «the injury, but some system of pro- 

 viding for thorough drainage during rainy weather and protecting the vines in 

 ease of sudden appearance of sunshine might in a measure avoid the difficulty. 



Mycological notes, B. D. Haxsted (Bui. Torrey Bot. Club, 24 (1897), No. 11, pp. 

 505-510). — Notes are given of a pineapple mold due to a fungus identical with or 

 closely allied to Chalara paradoxa; root galls on peach; and some natural enemies 

 of the asparagus rust. The last named are Tubercularia perisicinia and Darluca 

 filum, which are parasitic on the secidial and pucoinia phases of the fungus. 



Rust of asparagus, W. C. Sturgis | Connecticut state sta. Jtpt. 1896, pp. 2S1, 282, 

 pi. 1, jigs. 4). — A rust of asparagus which is causing considerable injury to the 

 asparagus crop is figured and briefly described. The author considers it possible 

 that some fungicidal treatment may prove available, but the thorough burning of 

 all diseased material in autumn or late summer will probably give better results 

 than the application of fungicides. 



Diseases of shade and ornamental trees, B. T. Galloway and A. F. Woods 

 ( U. S. Dept. Agr. Yearbook IS'.";, pp. 237-254, figs. 5). — The paper treats in a popular 

 way of the diseases due to soil conditions, air conditions, and fungus enemies. 

 Preventive measures are noted. 



Atlas of the diseases and injuries of cultivated plants, O. Kirchner and 

 Boltiiai'ser (Atlas der Krankheiten and Beschddigungen miserer landwirthschaftlichen 

 Kulturpflanzen. Stuttgart: E. Ulmer, 1897, pp. HI, 62, colored pis. ?2). — Treats of 

 the diseases, etc., of grasses, forage, and other plants. 



The diseases of cultivated plants and fruit and forest trees, E. Prillikt x 

 (Maladies des plantes agricoles, et den arbres fruitiers etforestiers cause'es par dee parasites 

 reijetanx. Paris, 1897, vol. .', pp. 590). 



