292 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



may be useful to orchidists. The intricate parentage of the hybrids is 

 given, but a less brief description would have added value to the account. 



W. G. 



Cattleya x Wavriniana, Cogn. (Cogniaux in Diet. Icon. 

 Orch., Cattleya hyb. ; pis. 18; 2/1902). — A garden hybrid raised by M. 

 Peeters, of Brussels, in 1900, out of C. Warscewiczii by C. granulosa, 

 Scho field iana. Sepals and petals dark purple brown ; lip side lobes 

 yellow tinted purple ; front lobe crimson purple. — C. C. H. 



Cauliflower Forcing". By H. Harold Hume (U.S.A. Exp. Stn. 

 Florida, Bull. 59 ; 2 plates ; October 1901). — A careful, practical, and most 

 complete manual of Cauliflower forcing for the market, embellished with 

 full-page illustrations beautifully reproduced from photographs of two of 

 the three kinds recommended as apparently most suitable for the purpose 

 in Florida. These are ' Extra Dwarf Erfurt,' ' Early Snowball,' and 

 'Dry Weather,' and the bulletin impresses upon the grower that the 

 better the seed the greater the chance of profit. 



The bulletin recommends very liberal treatment and gives the 

 analysis of the Cauliflower to show that the crop, planted as recommended, 

 that is, 2 by 3, or 7,260 plants to the acre, would remove from the soil 

 56*62 lb. nitrogen, 79*69 lb. phosphoric acid, and 156*81 lb. potash per 

 acre. 



It follows that fertilisers must be supplied in larger amounts than 

 this to allow for what must necessarily fail to reach the plants, or what 

 they cannot take up. 



The insect enemies to the crop in Florida are cut-worms and four 

 species of Cabbage-worm — Plusia brassier, Pieris rapce, Pieris protodice, 

 and Plutella macullicollis. As a poisoned bait for the cut-worms the 

 writer recommends bran mixed with enough Paris green to give it a 

 greenish tinge, and enough treacle to make it sticky scattered in a small 

 circle round each plant ; and against Cabbage- worm he suggests Paris 

 green or arsenate of lead, which can be applied with perfect safety to 

 the consumer until the young plants begin to head. To make Paris 

 green in solution stick to the plants he tells us to add dissolved soap, 1 lb. 

 hard soap to 40 gallons of mixture ; or it may be applied in the form of 

 powder by mixing 1 lb. of Paris green with 40 lb. of flour. The powder 

 may produce burning if too freely used, but a level teaspoonful of Paris 

 green mixed with a quart of lime may be used instead without any such 

 disadvantage. 



To prepare arsenate of lead, dissolve 11 oz. acetate of lead and 4 oz. 

 arsenate of soda in two or three gallons of water and dilute to 100 gallons 

 for use.— M. L. II. 



Cecidiologfical Notes : L The Role of the Epiderm in 

 Abnormal Swelling's. By Ernst Kiister (Flora, vol. xc. 1902, pp. 

 67 H'.i ; 4 woodcuts). — Though the epiderm is less influenced than funda- 

 mental tissue, it is in many instances under the gall-stimulus induced to 

 form hairs &c, even to become many-layered by tangential division, 

 in a manner having no relation to the normal behaviour of its cells. 

 He recalls that in Begonia only does the epiderm take part in the 



