Agricultur, Horticultur, Forstbotanik. 351 



rentes opinions des auteurs au sujet de l'Amandier amer, interprete 

 par les uns comme etant une sous-variete (Bianca) ou une variete 

 (Linne, de CandoUe, Baillon, Scotti, Genu) de l'Aman- 

 dier doux, considere par les autres comme une espece autonome 

 (du Hamel, Spach, etc.) L'auteur lui-meme pense que l'Amandier 

 amer est le veritable Amygdalus commmiis dont l'homme a tire 

 l'Amandier doux, et montre que depuis les temps les plus recules 

 on savait transformer l'Amandier amer en Amandier doux au moyen 

 d'incisions sur le tronc, d'engrais abondants et, en un mot, au 

 moyen d'une culture soignee. D'apres l'auteur, l'Amandier actuelle- 

 ment cultive serait une variete tnacrocarpe issue des pJantes ä 

 fruits amers, ameliorees en les greffant sur elles-memes. II fait res- 

 sortir quels sont les caracteres morphologiques et chimiques qui 

 distinguent l'Amandier cultive (amer et doux) de l'Amandier sub- 

 spontane qui est amer et montre que les moyens de transformation 

 et d'amelioration suivis par les anciens sont restes les memes de 

 nos jours. R. Pampanini. 



Jardine, W. M., Notes on Dry Farmin g. (Circular X, Bureau 

 Plant Ind. U. S. Dept. Agric. (Washington, D. C.) p. 1—6. 1908.) 



Dry-Land agriculture in Montana, Utah and Colorado. In 

 Utah wheat is free from rust and insect pests when grown on dry 

 lands; this enables varieties to be selected almost exclusively on 

 the basis of their drought-resistance. 



On a farm near Denver, Colorado, where the rainfall is 

 about 13 — 15 inches (330—380 mm.) annually, Montmorency cher- 

 ries planted 120 to the acre (190 to the hectare) yield on the average 

 one crate to the tree. Apples planted 80 to the acre do well and 

 London market currants set out 8 feet each way have averaged 

 one gallon of currants from each bush for the past three seasons, 

 the plants now being five years old. Alfalfa corn wheat and potatoes 

 are grown with success. The land is prepared for all of these crops 

 by very deep plowing, 9 — 12 inches deep, by means of a mould- 

 board plow. Disk plows are condemmed as they do not turn the 

 soil over completely. W. T. Swingle. 



Shamel, A. D„ Hairy Vetch {Vicia villosä) for green manuring. 

 Part I. (Rural New Yorker, LXVI. 2995. p. 490). Part IL (1. c. 2996. 

 p. 507. 1907.) 



Hairy vetch has proved a very valuable green manure crop in 

 the tobacco fields of the Connecticut Valley and elsewhere. Sown 

 from Aug. 15 to Sept. 15 at the rate of about 1^/4 bu. per acre (M 

 hectoliters per hectare). It is necessary to inoculate the soil or seed 

 with the root tubercule organism if vetches have not been grown 

 before on the land. Vetch plants are very rieh in nitrogen and "in 

 comparison with Red clover, two-thirds of the same weight of 

 vetch plants showed nearly an equal amount of nitrogen." The 

 author is engaged in breeding some strains acclimated to the Con- 

 necticut Valley and other northern regions and already the home 

 grown seed proves superior to the imported. Hairy vetch is a good 

 Cover crop for orchards and may be grown with profit for stock feed if 

 sown with a nurse crop. For green manuring it is sown alone. 



W. T. Swingle. 



