366 Forestry Quarterly. 



etc. Most of this ground would probably be covered in Silvi- 

 culture. It is mentioned here for the sake of completeness. 



Under this head might be considered also damage by smoke and 

 sulphur fumes. 



7. Trespass. This subject is mentioned here to prevent its 

 being overlooked in preparing a curriculum. Most schools cover 

 the ground under several different courses, as Forest Law, Forest 

 Management, Lumbering, and Administration. The forester has 

 occasion to seek damages for timber, fire, and grazing trespass, 

 as well as trespass in occupying forest land without permission, 

 or for breach of conditions of permits granted for special uses on 

 a forest. Ordinarily, a forester secures legal aid in pushing a 

 trespass case, but he has the task of determining the extent of 

 damage to the forest. He must be prepared to do this work. 



Forest Mensuration. 



The course in Forest Mensuration covers besides scaling of cut 

 wood the methods of determining volume and increment of trees 

 and stands. It is the foundation for the course in forest manage- 

 ment. Its scope has been well standardized in European insti- 

 tutions, and American schools have already pretty generally 

 adopted this standard. Just as in the case of surveying, instruc- 

 tion in the use of methods should be largely by field work, the 

 class room work being primarily in connection with the compu- 

 tation of data collected in the field, with quizzes and written 

 tests. 



The course deals first with the determination of the volume of 

 logs and other parts of felled trees. The student is taught both 

 commercial methods of measurement and also the methods of 

 accurate determination of volume for use in scientific work. 

 One of the subjects of early consideration is commercial log 

 scaling. The theory of scaling is simple; its practice presents 

 many difiiculties especially in making discounts for defects. Just 

 as far as possible the student should be given considerable prac- 

 tice in actually scaling saw logs during his course in mensuration, 

 but he should be given further practice in his practical training in 

 lumbering when he has the chance to see logs actually cut at the 

 mill. 



When the student has learned the different units of measure- 



