NOTES AND ABSTKACTS. 



239 



fore seed treatment by means of formalin is m'ged, while the feasibility 

 of removing scab-infested kernels by thorough cleaning of the seed-grain 

 in the fanning mill is shown by the investigations made as to the 

 relative weight of healthy and infected kernels. — M. L. H. 



Diseases, Plant, in Florida. By H. S. Fawcett (U.S.A. Exp. 



Stn. Florida, Rcpt. 1908). — Bacterial rot of cabbage (Pseudomonas 

 campestris) and of lettuce (causing browning of the leaf and subse- 

 quently rotting) are fully described, and a few others incidentally re- 

 ferred to. In the case of the former, wliich is sometimes . prevalent in 

 England, it is recommended that fresh soil should be used for seed 

 beds; the seeds should be wxtted with a solution of 1 part of corrosive 

 sublimate to 1,000 of water for 15 minutes; fresh ground should be 

 chosen for planting; the use of stable manure should be avoided; in- 

 fected plants should be burnt ; tools should be properly cleansed and 

 disinfected after digging in infected soils. — F. J. C. 



Distribution of Chlorogenie Acid in Nature. By K. Gorter 

 [Ann. Jard. Bot. Buit. viii. series ii. pp. 69-84). — Ohlorogenic acid is 

 decomposed by caustic alkalis into caffeic and quinic acids, C32H38O19+ 

 H20 = 209H804 + 2O7H12O6. Hydrochloric acid decomposes chlorogenic 

 acid, with evolution of carbonic acid and the formation of a product 

 soluble in ether. The etherial extract gives a characteristic violet 

 solution when shaken up with a dilute solution of ferric chloride. By 

 means of this reaction, the presence of chlorogenic acid has been detected 

 in 98 of the 230 species examined. It could not be detected in any of 

 the Leguminosae and Meliaceae.- — S. E. W. 



Drosera ornata. By H. P. [Garden, Nov. 27, p. 576 and fig.). — 



The- Australian sundew i& worthy of note as an ornamental flowering 

 plant. It is from 6 to 8 inches high, and the flowers tall. When 

 fully exposed to- the sun, the leaves and translucent drops often become 

 reddish. It is readily propagated by root cuttings. — H. R. D. 



Dry Farming' Investigations in Montana. By Alfred Atkin- 

 son land J. B. Nelson (U.S.A. Exp. Stn. Montana, Bull. 74, Dec. 

 1908). — The conclusions reached in this bulletin are that dry farming 

 may be carried on with profit on much of the great level area of the 

 State which will never be irrigated. Autumn-sown wheat and rye 

 answer better than spring-sown, and the crops should be grown in alter^ 

 nate years with a well-cultivated summer fallow, which will keep down 

 weeds and promote a mulch surface for retention of moisture. 



C. H. L, 



Echeveria. By J. N. Bose (Contr. fr. U.S.A. Nat. Herb xii. 

 (1909); pt. 9; p. 395; figs.).- — Two new species from Guatemala, 

 E. guatemalensis and E. Maxonii, are described and figured. — F. J. C. 



Echeveria earnicolor Baker. By J. N. Eose (Contr. fr. U.S.A. 

 ^at. Herb. xii. (1909); pt. 9; p. 393; fig.).— This plant was described 



