UNITED STATES DEPARTMENT OF AGRICULTURE 
Contribution from the Bureau of Plant Industry 
WM. A. TAYLOR, Chief 
WV ashington, D. C. PROFESSIONAL PAPER June 12, 1918 
FOREST DISEASE SURVEYS. 
By JAMES R. WEIR, Forest Pathologist, and Ernest E. Huppert, Scientific Assist- 
ant, Office of Investigations in Forest Pathology, Bureau of Plant Industry, 
- Missoula, Mont. 
CONTENTS. 
Page. | Page. 
BMITONTC UlO rie aera rege See ee Sr i) Jebnelno@l@eatenl, maya 19 
| Object of forest disease surveys___~ PAAR SHOU OCU TUE ON ees a Ee a le a 23 
Disease-survey methods ____---~--~-- 13 
INTRODUCTION. 
The National Forests are administered with the expectation of 
their becoming self-supporting through the medium of returns from 
such activities as timber sales, grazing, and special-use privileges. 
Of these operations, that of the sale of timber: is, in the National 
Forests of the northwestern United States, unquestionably of the 
eatest importance in: respect to paying the expense of administer- 
‘ing the forest. In district No. 1 in the year 1916 the total receipts 
from timber sales equaled $439,880 and grazing $50,836. These figures 
‘show the relation between the two incomes derived from the princi- 
| pal forest activities of this district. Some few of the forests have al- 
ready attained a position of self-support. One forest in particular 
‘is reported to have outdone all expectations and in so doing has aided 
in the administration of forests whose incomes have been less than 
‘their expenses. In such self-supporting forests it is always found 
‘that a ready market and available timber supply have resulted in a 
‘maximum of timber sales. It is, then, a ‘foregone conclusion that 
timber sales in the National Forests of the Northwest are the main- 
Stay of a self-supporting policy and that all data of value to timber- 
sale operations are bound to be of value in their successful super- 
vision. The data and recommendations included in this paper are 
based on conditions prevalent in district No. 1 of the United States 
Forest Service. 
39732°—Bull. 658—18——1 
