64 Forestry Quarterly 



There is also an appendix containing a list of references to 

 American works and periodicals, illustrations of forms used in 

 forest mensuration, a number of useful tables and some data for 

 use in connection with the office exercises. The last is designed 

 to meet the needs of those schools that are so located as not to 

 be able to secure original data for the office exercises. 



The special value of this manual lies in the concise way in 

 which the directions for working out the various problems are 

 stated. In this respect it is the nearest approach to a condensed 

 handbook of mensuration that we have yet seen, and on this 

 account will be useful to the practitioner as well as the student, 

 for whose use it is specially designed. In fact, we are inclined to 

 be a little doubtful whether the manual will find a very wide field 

 of usefulness in the particular purpose for which it has been 

 written, because of the wide range of conditions under which 

 mensuration is taught in different institutions. Forest mensura- 

 tion differs materially on the laboratory side from such subjects 

 as chemistry or physics. The location of the forest school with 

 respect to accessible timberlands and with respect to weather ; the 

 adjustments in the manner of presentation made necessary by 

 these important considerations as well as by the demands of the 

 time table, would seem to introduce factors that make necessary' 

 special arrangement of laboratory exercises to meet local condi- 

 tions. This manual is particularly adapted for use by those 

 schools that have good facilities for field demonstration, as is the 

 case at the University of Washington with which the authors are 

 connected. Schools which are not so fortunately located in this 

 respect will probably find it more convenient to arrange their own 

 outline of exercises to meet their own particular needs. Wher- 

 ever it is possible to place special emphasis on the field and office 

 exercises in presenting the subject of forest mensuration, this 

 manual will be extremely useful. This, we believe, is the correct 

 way to teach mensuration. Where the exercises are very largely 

 subordinated to the text book or lecture work for any of the 

 several reasons which sometimes make this necessary, the manual 

 will find less application. 



W. N. M. 



