DISEASES OF PLANTS. 957 



reported to have died from eating- this weed revealed the presence of a 

 great many other plants but no trace of this plant. Wild camomile 

 and parsley piert are reported to have caused a peculiar disease of 

 sheep, from which they recovered when placed in a held not containing 

 these, plants. Further information is desired relative to the injurious 

 properties of these plants. The pepper saxifrage is said to have caused 

 serious injury, since the butter made from milk of cows pasturing in a 

 meadow where this plant was abundant was unsalable. When the 

 plant was fed to pigs it made them sick. Its strong essential oil is 

 probably the cause of its undesirable character. Meadow saffron and 

 wild garlic are both considered undesirable weeds, the first on account 

 of being an irritant poison and the second because of the strong smell 

 and pungent taste which it gives to milk and butter from cows feeding 

 in pastures where it occurs. 



Concerning the valuation of some important agricultural seeds, 1>. Sakel- 

 lario ( Wiener Illus. Gart. Ztg., 23 (1898), No. ;.', pp. 50-66). 



Seed control, J. E. Jacobsen ( Ugeskr. Landm., 42 (1897), Nos. 27, pp. 34-1-348 ; 33, 

 pp. 431-433). 



Two solanums reputed to be poisonous to stock (Agr. (in:. New South Wales, 

 9 (1S9S), No. 1, pp. 37, 38). — Notes are given of Solatium, escuriale and S. ellipticum. 



Troublesome or injurious plants, G. Heuze (Jour. Ayr. Prat., ..' (1897), No. 47, 

 pp. 779, 780). — Notes are given of Eruca saliva, Raphanus raphanistrum, Ranunculus 

 salicus, Bumcx acetosella, and Polygonum aviculare. 



DISEASES OF PLANTS. 



Diseases of plants, W. Carruthers (Jour. Roy. Agr. 8oc. England, 



3. scr., 8 (1897), pi. IV, pp. 735-738). — The author briefly discusses a 

 number of diseases of cultivated plants and suggests the best reme- 

 dies, so far as known, for their prevention. He reports having found 

 timothy attacked by Spumaria alba and Gladosporium herbarium. ; and 

 clovers by Peronospora trifolii, Sclerotinia trifolium, and Pseudopeziza 

 trifolii. Among the diseases of cruciferous plants are mentioned 

 attacks of Plasmodiophora brassica on various root crops and Uromyces 

 betw as having been found on leaves of mangel-wurzels. An unde- 

 termined disease of mangel-wurzels is also noted. It attacks the 

 tuber at its base, involving both the tuber and the smaller roots, and 

 spreading, ultimately destroys the whole plant. There are said to 

 be associated with this disease several species of bacteria. 



Several samples of peas which were suffering from attacks of dif- 

 ferent species of fungi Avere received. For preventive remedies the 

 author suggests the liberal use of Bordeaux mixture. Puccinia aspar- 

 agi on asparagus is figured and described, and it is recommended that 

 all diseased plants should be cut to the level of the ground and burned. 



Two diseases of forest trees are briefly described, caused by Dasy- 

 scypha willJcommii on the larch and Bosellinia ligniaria on the ash. 



Rust and leopard spot of asparagus, W. G. Johnson (Maryland 

 Sta. Bui. 50, pp. 103-108, pi. 1). — The author figures and briefly 



