32 SMALL WHITE SLUGS, BED SPIDER, AND GEEEN PLY. 



when just starting. They may be easily traced to their con- 

 cealment by the slime they leave behind them. 



SMALL WHITE SLUGS frequently abound, especially after 

 repotting. Most probably they are brought in amongst the new 

 compost. As they are so small they are not as easily found 

 as the larger species. The only way I could ever find out to 

 catch them was by laying slices of Potatoes, Cabbage and Lettuce 

 leaves, in the places they resort to, turning these traps over 

 every morning or in the night, and destroying them directly. 



BED SPIDEE. Though this formidable tiny enemy seldom 

 abounds a'mongst Orchids on account of the moisture, yet, when 

 the plants are at rest and little water used, they do appear ; and 

 by feeding upon the foliage of such plants as are of a thin and 

 delicate texture, they turn them yellow and cause them to be 

 sickly. Like the thrips, the best and most effectual remedy is 

 washing the affected leaves with a sponge dipped in warm water 

 Sulphur laid on the warm pipes like paint is a good preventive. 

 Should a plant be much pestered with them, it is a good plan 

 some warm day to lay it on one side on grass, and give the 

 under side of the leaves a severe syringing. Do this in the 

 morning, and then the leaves will become dry before night. 



THE GEEEN FLY is, as every gardener knows, effectually 

 killed with tobacco smoke ; but it must be carefully used, never 

 allowing it to break out into a flame. 



In conclusion, I would press upon the cultivator never to tire 

 in keeping these tiny enemies in complete subjection. Use aU 

 the above means, if necessary, for their destruction. Whenever 

 a root is observed to be bitten off at the end, or a leaf spotted, 

 look diligently out for the spoiler and destroy it. It is much 

 easier to keep a collection of plants clear from insects by destroy- 

 ing them before they begin to breed than if they are neglected. 



DISEASES. 



Happily Orchidaceous plants are not subject to many diseases, 

 THE SPOT is the most common and the worst, and is most 



