530 THE GARDENER. [Nov. 



All business communications and all Advertisements shoiild be addressed to 

 the Publishers, and communications for insertion in the 'Gardener' to David 

 Thomson, Drumlanrig Gardens, Thornhill, Dumfriesshire. It will further 

 oblige if all matter intended for publication, and questions to be rei)lied to, be 

 forwarded by the middle of the mouth, and written on one side of the paper 

 only. It is also requested that writers forward their name and address, not for 

 publication imless they wish it, but for the sake of that mutual confidence 

 which should exist between the Editor and those who address him. We decline 

 noticing any communication which is not accompanied with name and address 

 of writer. ~ 



"WiREWORM. — I should advise your correspondent R. P. B. (See 'Gardener,' 

 page 464) to try a good dressing of gas-lime for kitchen-garden infested with 

 wireworm. It is best to apply in autumn, and let it be spread over the 

 surface, and dug or forked in in early spring. I have tried it here for grubs, 

 &c. &c., and think it an excellent remedy for destroying such pests. 



Robert Sowerby. 



A Subscriber. — It is difficidt to propagate the Tulip-tree in any other way 

 but from seed, which, when saved from trees in this country, seldom germin- 

 ates. Abundant supplies are, however, annually sent home from its native 

 country — America, from which nurserymen obtain young plants, which they 

 sell at almost nominal prices. If you can layer the branches of your tree, 

 you may be successful in rooting them in about two years. But seedlings 

 are always preferable, as they make the most vigorous and handsome trees. 

 The Tulip-tree is sawn into boards, and used instead of slates for roofing in 

 America. 



C. C, C. — There is at least no objection to your first suggestion: we have 

 them hung in the centre, and like them so, because when they fall in at the 

 top they let a stream of air up between the foliage and the glass. We are 

 not aware that there is any boiler that does more work with the same amount 

 of coal than boilers of the Cornish make, which, with the various im])roved 

 saddles, we reckon the best. For very early forcing we recommend bottom- 

 heat. The Gros Colman is quite equal to the Black Hamburg in the point 

 you name. It is also a very robust and heavy cropping Vine, and takes the 

 market remarkably well, on account of its huge berries and fine colour. 



Maud. — The weedy appearance of your Lobelia is the effect of the very 

 web summer experienced in so many localities this year, tin your climate 

 Nemophila insiguis would be far more effective. For blooming in August, 

 sow the 1st of June in good soil, and when the seedlings can be handled, thin 

 them out to about 4 inches by 10 inches, and you will not be disappointed. 

 "We have it beautiful now (middle of October), after 9° frost. For distant effect, 

 no other blue that we have tried can at all approach it. Lobelia, even in a fine 

 season, looks dull and leaden beside it when seen at a distance ; and, of course, 

 the Xemophila is far less trovible to grow. 



H. Rose. — Many thanks. Shall be glad to hear from you at any time. 



A Beginner. — You will not succeed in beginning to force so early unless the 

 Vines are thoroughly well ripened. If they are not, you will be more successful 



