52 Outdoor pests 
AO ee ae eee 

These webs contain a red 
insect called  cochineal 
from which a dye used to 
be extracted. Remove the 
webs with denatured al- 
cohol and spray periodi- 
cally. 

year furnish perfect living conditions for insects, and it is therefore 
natural that pests increase and multiply to an amazing extent when 
no control measures are adopted. Natural insect enemies which 
keep the pests within bounds in the open spaces are not to be found 
in these close quarters. 
Outdoors, one must guard the plants from dogs, birds, and even 
rats. More collections have been ruined by these obvious causes than 
