62 
314. Thaxter, Roland— Continued. 
ing upon tlie cabbage worm ( Pieris rapce). Gives results of simple experi¬ 
ment which showed the identity of the two diseases as being caused by the 
same species of Emjpusa. 
315. -. Peronospora on cucumbers. (P. Cubensis, B. & C.) Ibid., p. 19. Reports 
occurrence at South Manchester, Conn. 
316. -. Mildew of Lima beans. Ibid., p. 19. Reports extension of Phytophthora 
jiJiaseoli, Thax., from New Haven to Hartford and west to Norwalk. Does 
not find it outside of State. 
317. -. Rust of pears. Ibid., p. 20. Shows presence of Bcestelia stage of Gymno- 
8j)orangium globosum upon pears of the Japanese strain. 
318. -. Mildew of buckwheat. Ibid., p. 20. Reports Bamularia rufo-maculana on 
buckwheat. 
319. -. Rye rust and smut. ( Puccinia rubigo-v era, (DC.) Wint, and Urocystia 
occulta, Rabh.) Reports as unusually abundant. 
320. -. Some results from the application of fungicides. (Leaf spot of quince, with 
plate, Entomosjjorium maculatum). Ibid., pp. 21, 22. Reports successful use 
of Bordeaux mixture aud ammoniacal solution of copper carbonate against 
disease, with preference for the Bordeaux. 
321. -. Black rot of grapes. Records success in treatment of disease with Bor¬ 
deaux and copper carbonate in ammonia. 
322. -. Leaf spot of plums and cherries causing defoliation. Ibid., p. 24. Records 
successful use of Bordeaux mixture in prevention of the disease, trees sprayed 
holding their leaves intact, while those unsprayed dropped their leaves in 
July. 
323. -. Potato blight. Ibid., p. 24. Reports successful checking of disease by 
the use of Bordeaux, giving comparison of 3f bushels per row as compared 
with 6 bushels sprayed. Only 5 rows were treated. 
324. -. Strawberry rust. Ibid., p. 24. Records negative experiment with fungi¬ 
cides in its prevention. 
325. -. Further experiments on the “smut of onion.” Continues last year’s experi¬ 
ments and reports the llowers of sulphur sown with the seed as giving results 
in the ratio of 5 to 1. In a large experiment finds sulphide of calcium, mu¬ 
riate of potash, muriate of lime, aud hyposulphite of sodium of little value, 
while sulphide of potassium aud flowers of sulphur gave moderate results. 
Finds from greenhouse cultures that the first leaves of seedlings are suscep¬ 
tible to infection by germinating smut spores while being pushed through the 
ground. 
326. -. Fungicides and their application (with fig.). Ibid., pp. 26-35. Discusses 
methods of application, pumps, hose, nozzles, describing a convenient pump 
to be used with a copper tank shaped like a washboiler. Gives formulas of 
Bordeaux, copper carbonate, ammoniacal copper carbonate aud ammonia- 
copper solutions made by mixing copper sulphate and ammonium carbonate 
together in proportions of } pound of copper sulphate to 1 pound ammonium 
carbonate. 
327. Weed, C. M. Preventing downy mildew or brown rot of grapes (with figs.). Bull. 
Ohio Ag. Ex. Sta., vol. m, No. 10, November, 1890 (issued 1891). Columbus, 
Ohio. Reports results of experiments in Ohio with these diseases, showing 
pronounced success with eau celeste and total failure with iron sulphate 
(copperas). Concludes eau celeste superior as preventive to ammoniacal 
copper carbonate. 
328. Woodworth, C. W. Botanical notes. Second Ann. Rept. Ark. Ag. Ex. Sta., 1889 
(published 1890), pp. 191-193. Describes in a popular way, giving remedies, 
pear blight, grape mildew, black rot of ‘the grape, and sorghum blight. 
Claims to have discovered Bacillus sorghi, Burr ill, while studying under Pro¬ 
fessor Burrill. Gives formulas for fungicides. 
