108 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



the best late kinds, the hardiest kinds, the easiest kinds to grow ; the 

 dwarf kinds, incurved kinds, the largest-flowered kinds : the best colours 



&G.—M. l. m 



Clematis Rust [Aecidium Otagense). {Dep. Agr. X.Z.. 16th Report, 

 190S. p. 109). — Reported on five species of Clematis. Only at present 

 known in the cluster-cup stage, and this considerably on the increase. If 

 the infection takes place towards the ends of the climbing branches it 

 would be best to cut away the diseased branches below the points of 

 infection and burn them. Spraying with Bordeaux mixture will to 

 a great' extent hinder spore formation and lessen the danger of further 

 infection. — 31. C. C. 



Clerodendron ugandense (Bot. Mag. tab. S235>.— Nat. ord. 

 Yerbenaceae ; tribe Yiticeae ; tropical Africa. Shrub 3-10 feet high ; 

 leaves opposite, inches long ; flowers forming a panicle of few- 



flowered cymes ; corolla irregular, anterior lobe J inch long, violet-blue, 

 others J inch long, pale blue ; filaments purple, arched upwards. — G. H. 



Clitoria arboreseens, Pollination of. By A. F. (Bull. Bot. 

 Dept., Trin., No. 5 s , April, 1903, p. 79). — From the writer's minute 

 observations and careful experimsnts it appears that the pollination is 

 effected through three distinct processes. 



1. It is mechanical, and consists of (first) a sinistrorse and (secondly) a 

 dextrorse gyration of the carina, in which the pollen is brushed from the 

 anthers by stylar brushes into the funnel of the carina. 



2. Heavy insects, viz. bees and wasps, visiting and shaking the flowers, 

 cause the pollen to fall into the concavity of the vexillum, whence some 

 grains on the insect's legs are transported to other flowers, and fall into 

 a small protected space formed by the bases of the vexillum and the free 

 anther, the latter helping to rub pollen from the insect. 



3. Ants, which visit the flowers freely, carry pollen grains attached to 

 their bodies, and leave them on the stigma. 



Protected blossoms artificially dusted with their own pollen were in 

 no instance fertilized. 



Under similar conditions cross pollination resulted in a 93 per cent, 

 fertilization. 



One plant only has been experimented with, and the writer suspects 

 small flying insects may effect fertilization in its natural habitat, and 

 hopes to make further investigations. — E. A. B. 



Codling Worm, Spraying for. By H. A. Gossard U.S.A. E _ . 

 Stn., Ohio, Bull. 191, February 1908; 2 figures and 21 plates).— The 

 experiments in spraying were conducted, in an orchard of about twelve 

 acres, in a district particularly subject to this pest, the principal materials 

 used being Bordeaux mixture, arsenate of lead, and Paris green. There 

 is nothing very definite in the conclusions as to the relative merits 

 of these different washes (p. 117), but the results of the sprayings were 

 very marked, the net profit from spraying i p. 125 1 an average-sized tree from 

 twelve to twenty years old in one season, at a cost of 30 to 50 cents, being 

 estimated at S3 to S~ when the apples were worth £1 per bushel, a con- 



