December i8, 1889.] 



Garden and Forest. 



605 



most easily destroyed by thoroughly turning over and rolling 

 the soil in the late autumn or very early spring. Thus buried 

 deeply and with the earth pressed firmly about them, the deli- 

 cate flies would either be crushed in the pupa state or would 

 not be able to push their way to the surface. This might de- 

 stroy a large proportion of them. These remedies are merely 

 suggested ; they have not been tried, and may not be practi- 

 cable or efficient. Very injurious attaclvs are often quite local, 

 and on some estates about Boston the trees have been com- 

 paratively free from damage by the insect, although its 

 presence may be everywhere detected. 



Foreign Correspondence. 



London Letter. 



'X'HE end of November may be termed a kind of close sea- 

 -*■ son for horticulture. There are Clirysanthemums, of 

 course, and they are everywhere, crowding exhibitions, tilling 

 the papers, and occupying the attention of almost every horti- 

 culturist. In the houses we have little except Chrysanthe- 

 mums. Hope of better things soon is encouraged, however, 

 by the development of the Poinsettia, Euphorbia, Linum, 

 Luculia, winter-flowering Acanthads and the Ericas ; but they 



Fig. 152. — Cecidomyia liriodendri. — See page 604, 



It is quite possible that on account of unfavorable seasons 

 or other causes, there may be years when its disfigurement of 

 the foliage will not be noticed, and it will only occur in injuri- 

 ous numbers at irregular intervals. 



The accompanying illustration, from a drawing by Mr. C. E. 

 Faxon, shows a leaf well filled with spots, although there are 

 frequently two or three times as many in a single teaf. It may 

 be added that the " similar spots " made by a " lepidopterous 

 larva," mentioned by Baron Osten-Sacken, have so far not been 

 detected here ; but leaves with long, irregular, winding mines 

 are not uncommon. 



Arnold Arboretum. Johll G. Jack. 



are only coming. Out-of-doors the near approach of Christmas 

 is heralded by the beautiful white cups of the Hellebores, and 

 there are still left the spikes of Schizostyles, notwithstanding 

 three successive nights of about nine degrees of frost and a 

 slight fall of snow. The Sea-buckthorn {Hippophae rham- 

 tioides) is heavily laden with its bright orange berries, and the 

 yellow Jasmine is beautifully in flower on a sunny wall. Until 

 the frost came our trees and shrubs were richer in autumn 

 colors than they have been for many years. All of those 

 mentioned by Mr. Jack in his interesting notes on the autumn 

 colors of leaves in American gardens were brilliant here, 

 besides many others not mentioned by him. Indeed, so 



