AESTKACTS. 



567 



(Enotheras, and How to Grow Them. By S. Ainott (Gard. 

 Chron. No. 753, p. 847 ; 1/6/1901).— The names of the most attractive 

 species are given, with a short description, and hints as to growing them. 



G. S. S. 



Omania. By Spencer Le M. Moore {Journ. Bot. 464, p. 258 ; 

 8/1901). Fig. 424. — Description of a new monotypic genus of Scrophih- 

 lariaccce, next to Bungca, from Oman, Arabia, and of the species 0. 

 arahica. — G. S. B. 



Onion-culture. By R. L. Watts {U.S.A. Dep. Agr. Bull. 39, 

 1896). — Selection of soil, preparation, previous crop, fertilising, culti- 

 vation, American and European varieties, irrigation, harvesting, storing, 

 production of Onion-seed. Soil should be rich in organic matter, heavy 

 dressing farmyard manure, 200 to 400 lb. nitrate of soda in four equal 

 dressings, also potash and phosphate manures, plants transplanted three 

 inches apart in rows twelve inches apart, frequent stirring, hand weeding 

 in early stages, wheel-hoe later. Good crop — 500 to 1,000 bushels 

 per acre. — C. H. H. 



Opuntia bicolor. By R. Irwin Lynch (Gard. p. 429, 15/6/1901, 

 with fig.). — Giving particulars as to requirements for culture successfully 

 adoi^ted in the Cambridge Botanic Garden. — H. J. C. 



Orange, Bergfamot (Bull. Bot. Dep. Jam. vol. viii. p. 84). — The 

 cultivation is recommended for the oil or essence of Bergamot. 100 

 fruits yield 2}> to 3 oz. It is principally grown in Calabria, Sicily, and 

 S. France. Method of manufacture quoted from Pharmacographia, 2nd 

 ed. p. 122.— H. 



Orange Culture in British Gardens. By M. H. (Gard. Mag. 

 2,500, p. 625, 28/9/1901).— The article on this subject is intended to 

 stimulate the interest in Orange and Lemon culture under glass in this 

 country, and particularly of the Tangerine variety, which, when well 

 grown and fruited, is really a very ornamental pot ]3lant. As so many 

 like to grow Orange-trees in pots and tubs, the cultural notes may be 

 useful.— ir. G. 



Orange-trees. By W. C. Stubbs (U.S.A. St. Bd. Louis. Vdth Ann. 

 Bep. 1900). — This report shows that fifty varieties of Oranges are being 

 grown on the Audubon Park Experiment Station, besides over a hundred 

 Orange-trees, being hybrids between the hardier sweet varieties and the 

 non-edible Japanese "trifoliate," but they have not yet borne fruit. 



C. H. C. 



Orchards, Beautiful. By Alger Petts (Gard. Mag. 2,501, p. 640, 

 5/10 1901). — The writer describes how an old orchard may be made 

 beautiful by planting between the trees masses of hardy perennials for 

 summer and autumn effect, and the hardiest of the Narcissi and other 

 bulbs that wi]l flourish in grass for producing colour efi'ects during 

 spring. — ir. G. 



