Price (to Non-Fellows) 5s, 



Vol. XL. Part 1. 



THE 



JOURNAL 



OF THE 



EDITED BY 



F. J. CHITTENDEN, F.L.S. 



The whole of the contents of this volume are copyright. For permission to 

 reproduce any of the articles application should be made to tlie Council. 



CONTENTS. 



PAGK 



North American Forestry. By Professor W. Somerville, D.Sc. ... 1 

 The Use of Explosives and the Blow Lamp in the Garden. By H. E. 



Durham, D.Sc 7 



Evolution by Degeneration. By Rev. Prof. Henslow, V.M.H 19 



Pruning Hardy Shrubs. By E. Beckett, V.M.H 24 



Cultivation of Hippeastrums. By C. R. Fielder, V.M H 35 



Probable Origin of Existing Flowers. By Rev. Prof. Henslow, V.M.H. 40 



Fairy Flies and their Hosts. By F. Enock, F.L.S. 45 



Meteorological Observations at Wisley. By R. H. Curtis, F.R.H.S. ... 51 



Analysis of Pea Trials at Wisley. By F. R. Durham, A.M.I.C.E. 65 



A Cabbage Disease. By W. B. Grove, M.A. ... 76 



Quercus semecarpifolia. By R. A. Dummer ... ... 78 



Quercus crassipes. By R. A. Dummer ... ... 79 



Euphorbia Hislopii. By R. A. Dummer 80 



Arctotis mirabiiis. By R. A. Dummer 81 



Contributions from Wisley Laboratory : 



XXII— The Rogue Wallflower. By F. J. Chittenden, F.L.S 83 



Examinations in Horticulture 87 



Book Reviews ... ... 114 



Notes and Abstracts ... ... ... ... ... ... 131 



Extracts from Proceedings. General Meetings, p. I; Scientific Com- 

 mittee, p. xxxix ; Fruit and Vegetable Committee, p. xlvlii ; Floral 

 Committee, p. Hi; Orchid Committee, p. Ixvil 



Notices to Fellows ... ... ... Ixxvili 



Advertisements. Index to Advertisements ... Advt. page 32 



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