NOTES AND ABSTRACTS. 



657 



newspaper use, for which purpose ground wood-pulp is hkely to be 

 used for a long time to come; but the pressure on the available and 

 irreplaceable supply of wood might be reduced by using the crops 

 mentioned in making paper for magazines, books, paper-bags, and other 

 commercial purposes. — C. H. L. 



Park, National Swiss (l^ei;. Hort. d'Alg. p. 74; Feb. 1912).— A 

 reservation has been formed in the Val Gluoza, in the Canton des 

 Grisons, in the Lower Engadine, which is to be free for twenty-five 

 years from the depredations of sportsmen, collectors, and amateur 

 botanists. It is a region singularly rich in typical animal and vegetable 

 life, and it is to be kept as a place where this life may be studied 

 without fear of its extermination. — M. L. H. 



Parnassia, Embryolog-y of. By Lula Pace {Bot. Gaz. vol. liv. 

 pp. 306-329 ; Oct. 1912 ; 4 plates). — This paper contains a full account 

 of the ovule, embryo sac, synergids, endosperm-nucleus, chromosomes, 

 general cytology, and fertilization of Parnassia, which is compared with 

 Saxifraga and Drosera. The author considers that it is most nearly 

 allied to the Droseraceae, and should be removed from Saxifragaceae to 

 that order.— G. F. S. E. 



Peach and Plum Slug*, Notes on the. By E. A. Cushman 



{U.S.A. Dep. Agr., Bur. Entom., Bull. 97, pt. v.; Nov. 1911; 

 1 plate, 3 figs., 8 tables). — The growing popularity of spraying peaches 

 and plums with arseniate of lead in self -boiled sulphur- wash, for 

 plum curculio' and fungous diseases will undoubtedly reduce the 

 damage done by the peach and plum slug (Caliroa [Eriocampoides] 

 amygdalina Eohwer), which skeletonizes the leaves. It is mostly in 

 small unsprayed home orchards that it will be found in injurious 

 numbers. — V. G. J. 



Peach Bud Mite, Notes on the. By A. L. Quaintance {U.S.A. 



Dep. Agr., Bur. Entom., Bull. 97. pt. vi. ; Feb. 1912; 5 plates). — For 

 some years nurserymen in the East have complained of a trouble with 

 peach nursery stock, resulting from injury to the tender terminal bud 

 of the principal shoot, which injury causes the cessation of growth ol 

 the shoot and results in the development from the lateral buds of 

 numerous branches, a condition not desired where a single vigorous 

 shoot is wanted. It has been ascertained that the damage is caused 

 by a mite identified as Tarsonemus watei Banks. Little definite 

 information has been obtained up to now of its life-history, but it 

 appears to hibernate behind the buds during winter, and commences 

 its attacks early in May. There are probably three generations. — V. G. J. 



Peach, Fung-us Disease of. By H. H. Whetzel (l7.>S'.i. St. 



Fruit Growers' Ass., New York; 1912). — The diseases known as leaf 

 curl, brown rot, scab, mildew, crown gall, and canker are dealt with, 

 and suitable methods of treatment recommended. The best spray is 

 thought to be the lime-sulphur wash. — F. J. C. 



VOL. XXXVIII. u u 



