662 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Insecticide for Caterpillars on Plum and Vine. By J. Laborde 

 (Ann Agr. p. 542 ; Oct. 1902). 



Resin . . . . . . .1*5 kilo. 



Caustic soda ...... 0*2 „ 



Ammonia (22°B) 1 litre 



Water 100 litres 



The ammonia stupefies the insect, the resin varnishes over the respiratory 

 organs and suffocates it. — C. H. H. 



Insecticides and Fungicides. By Chas. D. Woods (U.S.A. Exp. 

 Stn. Maine, Rep. 1902, pp. 197-209). — Contains analyses and results of 

 experiments with certain commercial insecticides and fungicides, and notes 

 that these can usually be compounded much more cheaply by the user. 



F. J. C. 



Insect Spray for Vegetables (Qu. Agr. Joum. xii. p. 347, 

 May 1903). — Mr. S. C. Voller, Assistant Instructor in Fruit Culture of 

 the Department of Agriculture, reports an infallible wash for destroying 

 aphis and other insect life on vegetables. 



Take 20 lbs. of resin, 4 lbs. of caustic soda (98 per cent.) or 6 lbs. (70 

 per cent.), 3 pints of fish oil, or 2\ lbs. of whale oil soap, and 140 to 150 

 gallons of water. Place all the above ingredients in a boiler with 20 

 gallons of water, and let the whole simmer for three hours. Then add hot 

 water slowly, and stir well till there are at least 40 gallons of solution, 

 then add cold water to make up to 140 gallons. Never add cold water 

 when cooking. — M. C. C. 



Inula glandulosa fimbriata (Gard. Mag. No. 2603, p. 625 ; 



19/9/03). — A new variety raised at Aldenham House, having the ray- 

 florets fimbriated or divided and said to be more showy than the typical 

 plant.— W. G. 



Iris bucharica. By W. B. Hemsley (Bot. Mag. tab. 7914).— Nat. 



ord. Iridece, tribe Morceece. Native of of Bokhara. This species is 

 closely allied to I. orchioides and I. caucasica, having a nearly globose 

 bulb. The flowers are yellow and white, about 2h inches across. The 

 petals have long claws. — G. H. 



Iris Disease. By C. van Hall (Zeit. f. Pflanz. xiii. pp. 129-144, 

 5 figs. ; 1903). — Iris florentina and I. germanica in Dutch nurseries have 

 ri oently suffered considerably from a rot, which appears first in unfolding 

 shoots, but later extends to the rhizomes. The author traces it to three 

 bacteria. Of these Bacillus omnivorus has been studied in detail. A 

 special investigation of toxins obtained is described. The author believes 

 that many saprophytic bacteria may, under suitable conditions, become 

 parasitic on plants. — W. G. S. 



Irises, Dwarf. By S. Mottet (Rev. Hort. September 16, 1903, pp. 

 429-81 ; 8 woodcuts). A description of a number of dwarf bulbous Irises, 

 with cultural notes. Deep pots recommended, sandy peat, and frame 

 culture owing to early blooming. — C. T. V. 



