rV CONTENTS. 



HOETICtJLTURE. 



Page. 



Electricity in relation to horticulture, Priestley 136 



Electricity in horticulture, Elliot 136 



Horticulture on moorlands. — Utilization of German moors, Echtermeyer 136 



Frost protection in fnxit orchards 136 



An analysis of western spraying methods, !Melander 136 



Peach growing in Alabama, Williams and Price 137 



Geotropic angle of roots in relation to productiveness of grapes, Averna-Sacca. . 137 



Grape growing and grafting, Dtimmler 137 



On the duration of grafted vines and means of prolonging it, Couderc 137 



The hybrid producers in 1910, Pee Laby 138 



The olives of Corfu, Sordina 138 



The Satsuma orange, Williams _. 138 



Splits of the navel orange: Cause and remedy, Coit 138 



Contribution to the study of the ripening processes of lemons, Parrozzani 138 



Coconut palm culture, Zaepernick 139 



The kola trees and kola nuts, Chevalier and Perrot 139 



A new tea plant, Grimme *. 139 



Alpine flowers and rock gardens, Wright 139 



Rock gardens; how to make and maintain them, Meredith 139 



Select carnations, picotees, and pinks: History and cultivation, Fraser 139 



The sweet pea, Jardine 139 



Vines and how to grow them, McCollom 139 



FORESTRY. 



Trees and shrubs, edited by Sargent 140 



Trees and how to know them, Lambeth 140 



Trees and forestry, Dickerson 140 



The distribution of woody plants in the Pike's Peak region, Schneider 140 



Studies on soil improvement faculty of important timber species, Wallenbock. 140 



Experiments with foreign species of wood in Prussia, Schwappach 140 



The cubic content and form of the pine in Sweden, Maass 140 



A note regarding the teak forests of Burma, Troup 141 



Cultural experiments with the yew ( Taxus baccata), Burckhardt 141 



Variability of plantation Para rubber, Cayla 141 



A new coagulant for Manihot glaziovii, Zimmermann 141 



The forest resources, Griffith 141 



Report of the forestry department for the year ended June 30, 1910, Hay 141 



Photogrammetry and its importance for forestry, Hugershoff 141 



Single seed selection, Elliot 141 



Influence of incorrect dimension determinations on content of logs, Schiffel. . . 141 



Forest fires and their prevention, including fires in North Carolina, Holmes. . . 142 



Method of distinguishing powellized and the unpowellized wood, Singh 142 



Wood pulp and its uses. Cross, Bevan, and Sindall 142 



DISEASES OP PLANTS. 



Plant diseases (phytopathology), lachevski'i 142 



Investigations in plant diseases, Miiller, Stormer, et al 142 



Origin of heteroecism in the rusts, Olive 142 



The yearly origin and dissemination of Puccinia graminis, Pritchard 142 



The wintering of Puccinia graviinis tritici and infection of wheat, Pritchard 143 



Effect of club root disease on ash constituents of cabbage root, Reed 143 



Irish blight, Lea 143 



Report of the pathologist, Johnston 143 



Scolytus rugu losus in the spread of bacterial blight in pear trees, Jones 144 



Peach leaf curl fungus, Quinn 144 



Destruction of plum trees in Rhine Provinces and cherry tree disease, Liistner. 144 



A bacterial gummosis of cherries. Griffin 144 



Experiments in the control of the red spot disease of grapes, Lustner 144 



A variety of Cladosporium herbarum on Citrus aurantium, Fawcett and Burger. . 145 



Report of mycologist for the year ending March 31, 1911, II, Rorer 145 



The control of the chestnut bark disease, Metcalf and Collins 146 



