356 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



States, especially Florida and Texas ; (3) as a suitable crop for forcing 

 for a winter supply ; and (4) as a field crop for supplying canneries. 



In the first case, the seed is sown about the middle of March and 

 transplanted to the field about June 1. 



In the South it is naturally sown much earlier ; in Northern Florida 

 in January, and the plants set out in March. 



Cultivation of the tomato for canning purposes may be most 

 successfully practised, provided care is given to the selection of the 

 variety, the growing of the plants, fertilising and cultivation. — C. H. C. 



Trees: various Operations to obtain Symmetrical Growth. 



By George Bellair {Rev. Hort. May 1, 1905, pp. 210-211; 3 wood- 

 cuts). — The development of lateral growths is stimulated or retarded 

 by means of V or f\ shaped incisions above or below the starting point — 

 the V cut beneath retarding and the A cut above accelerating growth. 

 Retarding is also effected by partial strangulation by means of 20 or 

 30 spiral coils of string round the base. Depression to the horizontal 

 of vigorous upward growths also retards perpendicular elevation of 

 weakly ones. Several other methods are mentioned, but the above 

 appear to be the more important. — C. T. D. 



Tulipa linifolia. By C. H. Wright {Bot. Mag. tab. 7998). —Nat. 

 ord. LiliacecE, tribe Tulivece ; Turkestan. This has narrow, wavy leaves 

 and crimson petals, with a black-purple spot inside the base, and purple 

 stamens. — G. H. 



Turraea Eylesii. By E. G. Baker [Journ. Bot. 506, p. 45 : 2 1905). 



Description of a new species, a large shrub with creani-coloured flowers, 

 allied to T. obt us i folia and T. moynbassana, found by Mr. Eyles among 

 granite boulders on the Matoppo Hills, at an altitude of about 5.000 

 feet. — G. S. B. 



Uredineae, On the Vegetative Life of some. By Jakob Eriksson 

 {Ann. Bot. xix. 1905, pp. 55-59). — The paper is a further defence of the 

 author's mycoplasm theory. Some recent experiments on wheat and 

 rye are recorded, and also the results of a cytological investigation of the 

 corn rust fungus. 



In certain experimental plots an outbreak of rust occurred in the 

 beginning of July. Leaves from these plots had been carefully examined 

 in October and November, and also at intervals from April to July, but 

 no mycelium could be detected. The outbreak, therefore, does not arise 

 from a perennial mycelium, as none was present. The well-known 

 mycoplasm hypothesis is then put forward as the explanation. 



The mycoplasm is supposed to exist as a protoplasmic substance 

 within the cells of the host-plant, and at certain seasons it escapes from 

 the cells and forms an intercellular mycelium of the rust fungus. 

 Cytological details are given. — A. D. C. 



Vanilla Humblotii. By R. A. Bolfe {Bot. Mag. tab. 7996^— Nat. 



ord. Orchidacea, tribe Xeottiece ; Madagascar. A tall, leafless climber, 

 with fleshy stems and yellow flowers, 5 in. across the lip, with rosy- 

 crimson lines. — G. H. 



