HORTICULTURE. 339 



difference in the yields of trees of tlie same variety, planted in the same year, 

 and in abont the same kind of soil. 



Further data are given on the strains of tomato seed being saved at the 

 station. The selection for earliness has resulted in plants which bear ripe 

 fruit 19 days earlier than the plants from the selection which has been made 

 for productiveness. Plants which were selected for earliness and uniformity 

 without regard to productiveness yielded 20.42 per cent less than the plants 

 selected for productiveness, while the amount of ripe fruit up to August IS 

 was 46.11 per cent greater in the selection for earliness alone than in the selec- 

 tion for productiveness. The selection for uniformity has not given as marked 

 results as the selection for earliness. Where the selection for earliness has 

 been made from the individual plant each year, the average date of the first 

 ripe fruit is 5 days earlier than where the selection was made from the first ripe 

 fruit in the field. 



Height and diameter measurements are given for the trees growing in the 

 forest belts at the farm, together with descriptive lists of the best hardy orna- 

 mental, evergreen, and deciduous trees, and of a number of single and double 

 varieties of lilacs being tested. 



R. Robertson, in charge of the substation at Xappan, N. S., reports data on 

 the dates of picking and yields of different varieties of strawberries, garden 

 peas and beans, and on the yields of tomatoes. 



Similar data are given for a large number of vegetables grown at the Sas- 

 Ivatchewan Substation, A. Mackay in charge, together with the blooming periods 

 of a large number of annual and perennial flowers. 



In addition to the usual varietal notes, J. Murray, of the Manitoba Sub- 

 station, and G. Hutton, of the substation for Central Alberta, give notes on a 

 large number of trees and shrubs planted in 1907, sliowing their condition the 

 following spring, and T. A. Sharpe, of the British Columbia Substation describes 

 several varieties of apples or pears which are very little known or fruited at 

 the station for the first time in 1908. 



The seeds of horse-radish and the results from sowing' them, J. Brzezin- 

 SKi {Bill. Int(rnat. Acad. .Sv-/. Cmcovlc, CI. Sci. JIath. et Xat., WOO, No. 7, pp. 

 392-408, pis. -'/; abs. in Rev. Sci. [Paris], .',8 {WW), I, No. 1, p. 2i ) .—Successful 

 experiments in the production of perfect seed of the common horse-radish 

 {Cochlearia armoracia) through the agency of annular decortication are re- 

 ported, and the progeny secured from these seeds discussed. 



Two strongly different types of plants were found among the seedlings which, 

 if their source had not been known, would hardly have been classed as belong- 

 ing to the same species. The ordinary horse-radish resembled some interme- 

 diate forms secured. The author is of the opinion that common horse-radish 

 is merely a hybrid and that the contrasting forms secured are the result of the 

 breaking up of this hybrid into its original types. 



On the mineral nutrition of the mushroom (Agaricus campestris), A. 

 Hebert and F. Heim {Nancy [W09], pp. 12). — On the basis of the analyses 

 presented of various parts of the mushroom the authors are of the opinion that 

 both lime and potash fertilizers could be used with profit in mushroom culture. 



Pineapple growing' in Bataan and Bulacan provinces, M. M. Cruz {Phil- 

 ippine Agr. Rev. [EtujUsh Ed.], 2 {W09), No. 9, pp. 502-507, pi: 1).—A brief 

 general account of pineapple growing in these provinces, including suggestions 

 for imjjrovements in methods of culture. 



Grape culture: Planting', grafting and pruning, J. De Bano {Estac. Agr. 

 Cent. [Mexico] Bol. 11, pp. 25, figs. 36). — A popular bulletin on grape culture 

 dealing specifically with methods of propagation, planting, grafting, and 

 pruning. 



28918— No. 4—10 4 



