312 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Of these seven species the eggs of two are known, the larvae of four, the 

 pupae of two, the oviposition habit of one, and the emergence dates of 

 three. The only species of which the life-history has been completely 

 traced is that of the apple-seed chalcidid (Syntomaspis druparum), 

 which is also known to attack the seeds of mountain ash. — V. G. J. 



Cherry, A Preliminary Report on the Pollination of the. By 



V. R. Gardner {U.S.A. Exp. Stn., Oregon, Bull. ii6, Aug. 1913 ; 

 figs.). — All the varieties of cherry tried, including ' Bing,' *' Black 

 RepubUcan,' ' Black Tartarian,' ' Coe,' ' Early Purple,' ' Elton,' 

 ' Knight,' ' Lambert,' *' Major Francis,' ' May Duke,' ' Napoleon,' 

 *'Rockport,' ' Waterhouse,' ' Williamette,' ' Windsor,' and ' Governor 

 Wood,' were found to be self -sterile, and those marked * were inter- 

 sterile. Some members of the ' Duke ' group and some of the sour 

 cherries {Prunus Cerasus) are capable of fertilizing some of the 

 Bigarreaus. Intersterihty does not depend upon closeness of relation- 

 ship between varieties, nor is fertility entirely dependent upon the 

 kind of pollen available. Environmental influences are also im- 

 portant. ' Black RepubHcan,' ' Black Tartarian,' and ' Waterhouse ' 

 gave the best results with their pollen, other varieties being variable 

 in their effects. — F. J. C. 



Cherry and Plum, Yellow-leaf Disease oL By V. B. Stewart 

 (U.S.A. Exp. Stn., Cornell, Circular 21, January 1914, pp. i-io ; 

 9 figs.). — This disease is very destructive to all varieties of cherries, 

 and may cause entire loss of foliage. Sweet-cherry varieties are 

 often more seriously attacked than the sour varieties. European 

 plum varieties are also badly attacked, though the Japanese plums 

 are more resistant to the disease. 



The leaves are most frequently attacked, though the fruit may 

 occasionally be affected. The disease causes numerous holes to 

 appear in the fohage, producing " shot-hole " appearance. This is 

 characteristic of the disease in plums, but it is not so marked in the 

 case of cherry trees. 



The disease is caused by a fungus {Cyiindrosporium padi). It 

 is suggested that spraying with Bordeaux mixture (5-5-50 strength) 

 or lime-sulphur solution (i gallon in 50 gallons of water) reduces the 

 disease considerably. — A. B. 



Cherry Fruit Flies and How to Control Them. By J. F. 



Ilhngworth [U.S.A. Exp. Stn., Cornell, Dep. Entom., Bull. 325, 

 Dec. 1912 ; 22 figs.). — Poisoned bait composed of arseniate of lead, 

 3 oz. or 5 lb. ; cheap molasses, i pt. or 3 gallons ; water, 4 gallons or 

 100 gallons, has been found very effective when sprayed on the trees 

 twice, the first time June 10, the second June 24. — V. G. J. 



Cherry Fruit Saw-fly, The. By S. W. Foster [U.S.A. Dep. 

 Agr., Bur. Entom., Bull. 116, pt. iii., Jan. 1913 ; 2 figs., 2 pis.). — 

 The female saw-fly [Hoplocampa Coohei) deposits her eggs singly in 



