1904 



FORESTRY AND IRRIGATION 



209 



order to make the most gain in the long 

 run, and also foretell after how many 

 years the tract can be cut over again 

 and supply the same quantity of timber. 

 The plan usually arranges to leave a 

 certain number of mature trees on each 

 acre to seed the new crop, and regulates 

 the amount of grazing permitted and 

 precautions against fire, which latter is 

 one of the most important points. 



the utmost skill and write an excellent 

 prescription, but the latter will be of 

 little use to the average layman, or may 

 even do him injury, unless he has the 

 drugs compounded by a pharmacist 

 who can interpret the hieroglyphics 

 intelligently. The two cases are not 

 exactly analogous, for the plans are put 

 in as plain, direct English as possible. 

 The trouble is that years of study are 



PREPARING TO ANALYZE A LODGED TREE IN WASHINGTON. 



Preliminary examinations are also 

 made of limited areas, such as the 

 military reservation at West Point, in 

 which recommendations for treatment 

 rest upon an inspection by a skilled 

 man, no surveys or analyses being taken. 

 The ultimate success of the recommen- 

 dations arising from either the calculated 

 working plan or the preliminary exam- 

 ination depends to a large degree upon 

 having a thoroughly competent man to 

 mark the trees to be removed. A physi- 

 cian may diagnose a case of disease with 



needed to fully comprehend the ideas 

 of forestry and to modify them to special 

 circumstances in practice. 



The working- plans men go to all for- 

 ested states and territories. They pitch 

 their tents in the southern pines in win- 

 ter and in the northern or far western 

 states during the summer and fall. In 

 the south they flounder through the 

 gloomy swamps of cypress and black 

 gum, nourished by the traditional hog 

 and hominy and made nimble of foot 

 by occasionally running upon a moc- 



