68 FUMIGATION INVESTIGATIONS IN CALIFORNIA. 
with such unanimous favor by a community of California citrus 
growers demonstrates its value and economic importance. 
Since the first outfits were placed in operation at Whittier, others 
have adopted the improved system of dosage, and at the time of 
writing this fully a dozen similar outfits in various parts of Los An- 
geles and Orange counties, Cal., are using the new method in prefer- 
ence to the old. That such a large number of practical citrus growers 
in widely separated localities, who have been employing a system of 
fumigation for many years, should accept an innovation within two 
months, strongly indicates its superiority. 
FUMIGATION SIMPLIFIED. 
In the past many persons have been prone to look upon fumigation 
as a process that is complex and more or less mysterious. In some 
cases fumigators of years' experience have encouraged this widely 
prevailing opinion, so that they might themselves be looked upon as 
experts in a practice difficult to understand and only capable of 
being successfully performed by men of long experience and special 
qualifications. This is, of course, erroneous. The improved system 
outlined in these pages shows how simple the practice of fumigation 
may be made. Careful men who have never before heard of fumi- 
gation can begin the practice of this system and are competent, after 
instruction for a short time, to secure as good results as might be 
expected from the most expert fumigator in California. This system 
reduces fumigation to a matter of simple mechanical operation, 
entirety intelligible to the average man, and one wherein the operator, 
to obtain the best results, is required merely to proceed according to 
the formulas and directions given. 
This system makes it possible for the crchardists to possess outfits 
of their own — either individually or through joint ownership on the 
part of neighboring fruit growers — and to do the work with their 
own employees. 
