NOTES AND ABSTRACTS. 



693 



we have a series of suggestions and rules for planting gardens of different 

 dimensions. The materials dealt with are principally forest trees and 

 shrubs. Grasses for boundary rows are recommended. Annual and 

 perennial Vines, in which name all trailers and climbers are included, 

 occupy an important place ; but herbaceous plants are hardly mentioned 

 incidentally as ornamental factors. — C. W. D. 



Plants, Old World Names Of. By R. P. Brotherston (Gard. Chron. 

 No. 866, p. 69, Aug. 1, 1903). — The author in this paper criticises some of 

 the statements made by Mr. Druery in his paper in a recent number 

 (June 27) as to the origin of names, &c, and gives much interesting 

 information on this subject. This paper should be read in conjunction 

 with the one by Mr. Druery. — G. S. S. 



Pleione, The Genus. By R. A. Rolfe (Orch. Rev. Oct. 1908, 

 p. 289). — The structural differences from Coelogyne, and other interesting 

 particulars, of the various introduced and described species, are given. 



H. J. C. 



Plum Culture. By W. T. Macoun {Can. Rep. Ottawa State, Bull. 

 43, 7/03 ; 2 plates). — Gives a very full account of Plum culture, together 

 with lists of varieties suitable for cultivation in the different districts of the 

 province, and notes upon the fungal and insect attacks to which the Plum 

 is liable. A chapter is added on chemical fertilisers suitable for use in 

 Plum cultivation. — F. J. C. 



Plums, Propagation of. By F. A. Waugh (U.S.A. Exp. Stn. 

 Vermont, Ann. Rep. 1901-1902, p. 249). — A series of experiments with 

 different varieties of Plums grafted on different kinds of stocks, to 

 demonstrate what difference would be caused by the varying stocks. The 

 difference was surprisingly apparent, even the first year. Tables of growth 

 and memoranda of the trees are given, showing their progress in height, 

 diameter, &c. A number of one-year-old trees were lifted and both stems 

 and roots examined, the results of which are shown in tabulated form. So 

 far as the experiments have been carried they tend to show that the 

 greatest amount of influence is exerted by the health and vigour of the 

 individual stock.— E. F. H. 



Poplar Parasite (Sur le parasitisme du Dothichiza populea (Sacc. & 

 Br.) sur diverses especes de Peupliers). By Dr. G. Delacroix (Bull. Soc. 

 Mijc. Fr. xix. p. 353, with fig.). — This species of Dothichiza, previously 

 said to inhabit dead branches of Poplar, is shown to occur on the trunks 

 and branches of young Poplars, still living, of several species, as a true 

 parasite. It is recommended that when attacked the young trunks and 

 branches should be sprayed with a solution of sulphate of copper. 



M. C. C. 



Potato, Contribution to the Study of. By E. Breal (Ann. Agr. 

 pp. 545-576 ; Nov. 1902). — Humboldt and Bonpland found the plant wild 

 in great abundance at a height of 3,600 metres in the Cordillera of the 

 Andes. The roots were eaten by the inhabitants. At this height it freezes 

 during the greater part of the year ; during the day there is bright sun- 



