234 



JOUENAL OF THE ROYAL HORTICULTURAL SOCIETY. 



varnished-looking layer on the stem. After this the stems become 

 black in six to eight weeks. 



The bacteria are present in the soil, and infection may take place 

 either through the stomata, or through cracks caused by frosts or cold. 

 The disease seems to run its course in the first cutting, and is not seen 

 again till the following year. 



The writer recommends growing immune varieties, and when the 

 disease is prevalent, the early cutting away of frost-injured stems, 

 when all danger of frost is over. By this means the regular number of 

 cuttings should be secured with little or no loss. — D. M. C. 



Almond Shoots appearing- on a Peach Tree. By M. G. 



Boucher (Journ. Soc. Nat. Hort. Fr. ; Ser. 4 ; vol. xi. p. 513 ; August 

 1910). — The fact is stated that on several grafted peach trees more 

 than eighty years old some shoots of almond have just appeared. The 

 trees are in the garden of M. Formont at Montreuil-sous-Bois, and he 

 began to notice the phenomenon two years ago when the first of these 

 almond shoots appeared on a peach tree fifteen years old about three 

 metres above the graft. 



This year's shoots are on peach trees of the old variety Mignonne 

 which have made very little flowering wood this year and have borne 

 no fruit, as indeed has been the case with most trees this season. A 

 committee was appointed to inspect the trees, but has so far no theory 

 to account for their behaviour. Certain facts are, however, recorded 

 which may bear upon the subject. The roots of one of the stocks 

 were recognized as those of an almond. It is possible that the peach 

 was a hybrid of the almond and this is a case of a return to the 

 ancestral type, to support which theory we have the almond-peach 

 (A. "persicoides DO) from the old Persica Davidiana. — M. L. H. 



Apples, Three Snout Beetles that attpk. By F. E. Brooks 



(U.S.A. Exp. Stn., W. Va., JB^iZL 126 ; January, 1910 ; 4 plates.).— The 

 plam curculio {ConotmcJielus nenuphar Hhst.), apple curculio {A7itho7io- 

 mus quadrigihhus Say.), and the apple weevil (Pseudanthonomus cra- 

 iaegi Walsh) are the three beetles described in this bulletin, all of which 

 do much damage to the apple crop in many parts of Virginia by punc- 

 turing the fruit for the purposes of feeding and egg-laying. 



Spraying with arsenate of lead or Paris green and jarring the insects 

 from the trees on to white cloths placed below, are among the remedies 

 suggested. — V. G. J. 



Ambulia sessiflora. By H. Baum (Die Garten, p. 657, Dec. 17, 

 1910). — A very pretty aquatic for greenhouse or aquaria. It grows 

 easily and quickly, and is also easily propagated by seeds or cuttings, as 

 well as by division. Its native habitat is in India, in ditches for the 

 irrigation of the ricefields. It has pretty white flowers. 



Ottelia alismoides is another aquatic from India, resem^bling at first 

 sight a Sagittaria, and has long lanceolate leaves; later, however, when 

 fully grown, the leaves are large and cordate. The flowers of this 



