FUMIGATING. 



45 



area of a greenhouse or frame, it is possible to fumigate 

 glasshouses without the slightest personal discomfort or 

 risk of injury to vegetation, and with the absolute cer- 

 tainty that all pests will be destroyed. The sheets or rolls 

 have simply to be fixed in the house and ignited, and left 

 to burn by themselves without any necessity to re-enter 

 the house. 



The other preparations have to be vaporised by means 

 of a small spirit lamp placed underneath. Each inven- 

 tion is sold complete, so that it is unnecessary to purchase 



Fig. 1. Fig. 2. 



CUBICAL CONTENTS OF GREENHOUSE'?. 

 Diag-rams showing- above are to be obtained. 



a fumigating apparatus. There are a number of these 

 excellent materials in the market — such as cones charged 

 with nicotine, and which have simply to be ignited, no 

 lamp being required — and it would be invidious on our 

 part to mention any of them specially. No doubt, several 

 will be advertised in this volume. If not, a reference to 

 the pages of "Amateur Gardening " or the " Gardeners' 

 Magazine " will give a choice of suitable preparations. 



Cubical Capacity of Greenhouses. — In order 

 to use the preparations sold with accuracy, the cubical 



