88 



Fig. 3 — a, Bouche's scale; b, Bouche's scale on a leaf; c, Florida red scale; 

 d, Florida red scale on a leaf. 



erae, or nerii). Fig. 3 shows the form of the scales. The former scale is 

 nearly circular in outline, about 1-25 inch in diameter, and dark brown in 

 colour. The latter is not so circular, and is white. It is found on a large 

 number of greenhouse plants, such as oleanders, cycas, yucca, acacia, etc. 



With these scales tlie treatment with soap or tobacco solutions is to be 

 commended. Repetition is necessary, and when the plants are dipped 

 they should be rinsed afterwards with clear water. 



There are many other scales which are usually found in every large 

 greenhouse containing tropical plants, but enough has probably been said 

 to draw the attention of the owners to the commoner scales and to the 

 best methods of treatment. 



