1904 



FORESTRY AND IRRIGATION 



46.5 



Second Semester. 



Botany, short (4). 

 Surveying (4). 

 German or French (4). 

 Trigonometry (4). 

 Agricultural Physics (2). 

 Rhetoric (i). 



JUNIOR YEAR. 

 First Semester. 



Botany, Taxonomy (4). 

 Forest Entomology (4). 

 Forest Influence and Utility (2 s ). 

 Forest By-products (2). 

 Forest Mensuration (2). 

 Lumbering (2). 



Second Semester. 



Plant Ecology (4). 

 Law, elements of contracts (i). 

 Zoology (4). 



Wood Technology and Diseases of 

 Wood (4). 



Forest Valuation (2). 

 Silviculture (2). 



SENIOR YEAR. 



First Semester. 



Geology, I (4). 

 Silviculture (4). 

 Elements of Economics (4). 

 Vegetable Pathology (4). 



Second Semester. 



Geology, III and IV (4). 



Forest Economics (4). 



European Forestry (i). 



Forest Administration (2). 



Forest Protection (2). 



Fish Culture, Game Protection (lec- 

 ture) (i). 



Thesis, seminary in reading forest 

 literature (2). 



Four practicums are required in the 

 course in forestry, viz : in forest exploi- 

 tation, forest working plans, forest men- 

 suration, nursery practice. A thesis 

 must be presented in each of the four 

 subjects, giving the results of personal 

 observation. 



The above outline gives the number 

 of class-room hours per week for each 

 study ; the whole number of hours for 

 a period of a week, exclusive of labora- 

 tory work, amounts to between sixteen 

 and seventeen hours. The laboratory 

 hours and field work in the subjects re- 

 quiring it are reckoned at double the 

 class-room period. 



In addition to the scheduled course 

 indicated above there will be lectures 

 by the Chief Fire Warden, the State 

 Game Warden, and a number of prom- 

 inent lumbermen of St. Paul and Min- 

 neapolis. 



EFFECT OF FORESTS ON WATER SUPPLY. 



BY 



T. P. LUKENS, 



BUREAU OK FORESTRY. 



THE effect of forest fires on water 

 supply in the southern California 

 forest reserves, forest clearing and the 

 water flow in streams and springs, and 

 the relative flow from timbered, chap- 

 arral-covered, and bare watersheds are 

 problems of vital interest to our people. 

 We have at hand so many illustrations 

 covering all of these features that I 

 hardly know where to begin. I think 

 the most striking demonstration of the 



loss of water supply through forest fires 

 is in the San Gabriel Reserve. The San 

 Gabriel River drainage basin comprises 

 an area of 2 22 square miles. In 1901 -'2, 

 after five successive dry years, the min- 

 imum flow in the San Gabriel was 90 

 miner's inches. For the same period 

 the San Antonio River drainage basin, 

 with an area of 26.7 square miles, fur- 

 nished as a minimum 190 miner's inches. 

 There being such a great discrepancy 



