NOTES AND ABSTRACTS. 



387 



second deals particularly with the cultivation of pa-onies in an exhaus- 

 tive fashion, and cites the principal papers written concerning this popular 

 tiower. — F. J. C. 



Pavetta neurophylla and P. Eylesii. By S. Mcore {Journ. 

 Bot. 506, pp. 47-8; 2 1905). — Description of two new species allied to 

 P. cdcntula, collected by Mr. Eyles at altitudes of 4,400 to 4,500 feet, 

 near Buluwayo and in the Matoppo Hills respectively. Both are white- 

 flowered. — G. S. B. 



Peach Foliage Injured by Spraying 5 . By F. W. Card (U.S.A. 

 Exp. Stn. Bhode Inland, Bept. 1908, p. 228). — In one case a peach tree 

 was completely defoliated when sprayed with Bordeaux mixture in May. 

 Paris green containing varying amounts of free arsenious acid (2-84 per 

 cent, to 8 per cent.) was used for spraying, but resulted in serious injury 

 to the trees. Lime added to the solution mitigated the evil, but did not 

 wholly prevent it. It would therefore appear unsafe to spray peach trees 

 with Bordeaux mixture or with Paris green while the trees are in leaf. 



F. J. C. 



Peach Mildew. By 0. B. Whipple (U.S.A. Exp. Stn. Colorado, 

 Bull. 107, Feb. 1906; 2 figs.). — The name of this peach mildew is not 

 recorded, but it probably belongs to the Erysiphei, as it attacks leaves, 

 twigs, and fruit alike, and is said to be a surface grower ; and spraying 

 has been recommended with " Bordeaux mixture." There is no indication 

 that the application of powdered sulphur has been recommended, so that 

 possibly it may not be an oidium of the Er/jsipJic kind. — 3/. C. C. 



Pear 'Roosevelt" Gard. Chron. No. 979, p. 243, tig. 92: Sept. 

 80, 1905). — This new pear has been introduced into commerce by Mr. 

 Chas. Baltet, of Troyes, U.S.A., who says this pear "is destined to bring 

 about a revolution in our fruit gardens and orchards." The fruit is very large, 

 sometimes measuring 16 ins. in circumference. The skin is smooth, of a 

 pleasing whitish-yellow colour fading into lemon, with carmine-vermilion 

 spots on the sunny side. The flesh is snow-white, delicate, sweet and 

 melting, of an agreeable flavour. — G. S. S. 



Pear Scab. By B. E. Smith (U.S.A. Exp. Stn. California, 

 Ball. 168; 12 1904 ; 9 figs.). — This disease, characterised by a scabby, 

 corky growth on the surface, accompanied by distortion of the fruit, is 

 very prevalent in California, as in most countries where pears are grown. 

 Only the superficial part of the fruit is affected, the flesh being qui to 

 sound ; but the appearance of the fruit is quite spoiled, and the resulting 

 loss in value is enormous. The disease, which is caused by the fungus 

 Fusicl-adiam pirinum Lib., makes its first appearance on the leaves 

 ( particularly in 1 Winter Nelis ') or fruits, when the latter are quite small, a- 

 brown, velvety spots or patches on the surface. The fungus also appears 

 on the bark of the young shoots and twigs of the tree, where it is not 

 nearly so conspicuous. The fungus passes the winter upon dead leaves 

 on the ground and on the bark of the twigs. As the result of experi- 

 ment it is recommended (1) to clean up or plough in all dead leaves ; 

 (2) spray with the lime-sulphur- salt wash every other year as late in 



z 



