NOTES AND ABSTRACTS. 



771 



On the Orange and Pomelo the fungus causes the most severe damage, 

 defoliating young twigs, causing them to die, reducing the wood which 

 should produce bloom, and cutting back the growth of young trees. In 

 Lemon groves the most severe damage is done to mature fruit, whilst in 

 Lime groves the greatest loss occurs during the blooming season, the 

 disease often causing all the bloom to fall. Trees less severely attacked 

 often have 80 per cent, of the fruit cankered, and its market value reduced. 



Wither-tip and leaf-spot are best controlled by pruning out diseased 

 twigs, and then spraying with Bordeaux mixture. Spotting of Lemon by 

 spraying with ammoniacal solution of copper carbonate, and with sulphur 

 spray while in the colouring bed or colouring house. Canker of Limes 

 may be prevented by cutting out wither-tip before the blooming period, 

 and then by spraying with Bordeaux mixture. — M. C. C. 



Clays, Useful Properties of. By A. S. Cushman (U.S.A. Dep. 



Agr. Bur. Chem., Circ. No. 17). — A paper on the properties and chemical 

 composition of different kinds of clay, written from the point of view of 

 the potter. — M. L. H. 



Clematis Hybrid. By F. Morel (Rev. Hort. pp. 308-310, July 1, 

 1904 ; coloured plate). — Three attractive hybrids : 1 Mme. Raymond 

 Guillot,' intense crimson inside, deep rose beneath ; ' Mme. Moret,' 

 bright scarlet, whitish below ; and ' Mme. Lerocher,' rose-pink with 

 deeper margin. — C. T. D. 



Clerodendron myrmecophila. Anon. (Gard. Mag. 2633, p. 257 ; 

 16/4/04). — A descriptive note, with illustration of the new stove plant 

 discovered in the forests in Singapore in 1896 by Mr. Ridley.— W. G. 



Clivia (Imantophyllum) cyrtanthiflora, Van Houtte (Garten- 

 flora, May 1, 1904, p. 225). — A hybrid between Clivia nobiUs x Olivia 

 miniata, which resembles its parent Clivia nobilis very strongly. 



B. C. B. N. 



Cobaea SCandens. By Angiolo Pucci (Bull. B. Soc. Tosc. Ort. 4, 

 p. 115, April 1904). — By some this plant is regarded as type of the order 

 Cobeacecs, by others as belonging to the Polemoniacece. In the author's 

 establishment the plant is planted outside against a wall facing the east, 

 and flowered up to December. It was then at the height of its vigour. 

 The longest shoots reached the roof of the house (about 6 metres from the 

 ground). 



The campanulate corolla is 6-8 centimetres long and 4 centimetres 

 broad, at first greenish, then gradually becoming violet, this producing 

 one of the best effects ; at the bottom of the corolla some glands secrete 

 a sweet syrupy liquid. Professor Morren states that with five or six 

 flowers one can sweeten an ordinary cup of coffee. The flowers are 

 slightly scented at night. 



The plant has to be renewed each year by seed sown under shelter 

 from February to March. In warm localities the seed can be sown, as 

 near the house as possible, outside ; in colder places the seedlings are 

 potted and kept protected until May. The plant prefers a light rich soil, 



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