284 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Winter-killing" of Plants in Massachusetts. By G. E. Stone 

 {U.S.A. Exp. Stn. Mass., 18th Ann. Rep. 1906, pp. 119-124).— It is 

 pointed out that injuries due to frost are of various types : root-killing; 

 killing of aerial portions of plant ; frost-cracks ; twig-killing ; bud 

 injuries ; blisters on leaves, particularly of apples. The conditions con- 

 tributory to wdnter-killing in addition to intense cold are treated upon, 

 and a long list of plants is noted which were affected in severe 

 winters. — F. J. C. 



Witsenia CorymbOSa {Le Jardin, vol. xx. No. 454, p. 22 ; January 20, 

 1906). — A plea for the revival of a charming plant well known to the gar- 

 deners of 1848, and of which several varieties exist at Kew under the name 

 of Aristea. An iridaceous plant, a native of South Africa, it sends up its 

 purple spikes from September till late into the winter. Too hot a sun and 

 too much watering are alike to be avoided. It should be planted in small 

 well-drained pots, repotted, and divided in March. — F. A. W. 



