358 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY, 



Tomato Insects, Root-knot and "White Mold." By J. R, 



Watson (^7.5.^. Exp. Sin., Florida, Bull. 112, Dec. 1912 ; 23 figs.). — ■ 

 The bollworm or tomato fruit worm (Heliothis obsoleta) ; root knot, 

 caused by Heterodera radicicola ; thrips (Euthrips tritici) ; cut worms 

 (the larvae of the Noctuid family of moths) ; horn worms {Phlegethon- 

 tius quinquimaculata and P. sexto), tomato aphis, flea beetles, and 

 sundry other insects, are described and figured in this bulletin, 

 together with methods for their prevention and control. — V. G. J, 



Tomatos and Tobacco, Mosaic Disease of. By G. H. Chapman 

 {U.S.A. Exp. Stn., Mass., Ann. Rep. 1912, p. 41, Jan. 1913). — In 

 this disease the leaves first present a mottled appearance of light and 

 dark green. The light portion grows slowly, the dark normall}^ 

 In tomatos the light portion becomes yellowish, or finally purplish-^ 

 red. The author considers the disease to be purely a physiological 

 one, due to excessive activity of oxidase and peroxidase enzymes, and 

 the partial loss of function of catalase. It is infectious, but not con 

 tagious. It does not occur in seed-beds when new soil is used, nor in 

 properly sterilized seed-beds, but imperfect sterilization tends to 

 accentuate it. High temperature seems to conduce to the trouble, 

 but excess of mineral fertilizers does not appear to increase it. A 

 good bibliography is given and a further paper promised. — F. J. C. 



Tomosis or Leaf Cut. By O. F. Cook (U.S.A. Dep. Agr., Bulk 

 120, 1913), pp. 29-345 I fig.). — Young cotton plants often suffer 

 from leaf cut or tomosis when a cold night is followed by a hot 

 morning. The leaves are mutilated, and the terminal buds and 

 sometimes the axillary buds are aborted. — S. E. W. 



Town Manure, Loss of Weight in {Jour. Bd. Agr. vol. xxi. 

 No. 2, pp. 133-135). — The results are given of some experiments which 

 have recently been conducted by Pickering at the Woburn Experi- 

 mental Fruit Farm, in order to estimate the loss of weight which may 

 be expected to occur in town manure in course of transit. — A. S. 



Trees, Diseases of, in the Appalachians. By A. H. Graves {Phyto- 

 pathology, iii. p. 129. Apr. 1913 ; figs.). — Bark blight of Pinus 

 Strobus due to Cocomyces pini Karst., heart rot caused by Trametes pini,_ 

 and leaf blight of the same tree due to Lophodermium brachysporum 

 are fully dealt with. — F. J. C. 



Tricyrtis stolonifera {Bot. Mag. tab. 8560) .—Formosa. Nat. 

 Ord. Lihaceae, Tribe Uvulariae. Herb, 2 feet high. Stem reddish- 

 purple. Leaves, elliptic-lanceolate, 8 inches long. Inflorescence 

 lax. Perianth purple, blotched, saccate at the base. — G. H. 



Turkestan, Flora of;^' By Olga and Boris P^dtschenko {Beth. 

 Bot. Cent. xxxi. Abt. 2, Heft i, pp. 111-175). — ^This is a continuation 

 of the " Conspectus Florae Turkestanicae " previously published, and 

 contains Compositae from Calendula to Gerbera. New species are 

 referr-ed to, but seem to have been published elsewhere. — G. F. S. E. 



