600 



AMERICAN FORESTRY 



institutions as are more than passively in- 

 terested in forest legislation." 



Louis S. MURPHY. 

 Acting Chief of State Cooperation Forest 



Service. 

 MR. N. T. DOWLING, 



Legislative Drafting Research Fund. 



Columbia University, New York City : 

 Dear Mr. Dowling. In reference to your 

 recent request for information for the 

 Legislative Drafting Research Fund of the 

 University, I am appending the following 

 opinion, given by Mr. Louis S. Murphy, of 

 the Forest Service. I hope this will be 

 satisfactory. Editor. 



Pottsville, Pa. 



EDITOR AMERICAN FORESTRY. I am inclos- 

 ing in a small bottle some insects found on 

 my maple trees. Please tell me what they 

 are. 



S. M. ENTERLINE. 



The insects inclosed in a vial consist of 

 two species. The most abundant form is 

 the Norway Maple aphis, Chaitophorus aceris. 

 Another species represented by one specimen 

 is a tingitid, or lace-bug. The former 

 species is undoubtedly the one causing the in- 



jury to the maple leaves. This species has 

 been very abundant over the eastern part of 

 the United States during the past cool spring 

 and summer, causing considerable injury 

 to maple trees in some localities. Their 

 habit of gathering on the leaves where they 

 breed in extreme numbers, sucking the sap 

 from the foliage and causing it to curl and 

 turn brown, has attracted much attention. 

 At the present time, however, very little 

 complaint is experienced, as the insect has 

 become well under control of its natural 

 enemies and has, to a large extent, disap- 

 peared, owing, probably, to this cause and 

 to the hot weather of the later summer. 

 Trees are rarely killed by his pest, although 

 at times appearing seriously injured and, as 

 the insect rarely occurs in numbers for two 

 successive years in a given locality, it is un- 

 likely that remedial measures will be re- 

 quired. 



Should it appear a second year, an appli- 

 cation of whale-oil soap at the rate of five 

 pounds to fifty gallons of water to the under 

 surfaces of the leaves bv means of a spray 

 pump will prove effective in its control. 



F. H. CHITTENDEN, 

 In Charge Bureau of Entomology. 



BOOK REVIEWS 



FORSTAESTHETIK. HEINR1CH VON SALISCH. 



THIRD EDITION. ILLUSTRATED: VII+4:54 

 pp. JULIUS SPRINGER, BERLIN. 8 MARKS 

 ($2.00) ; POSTAGE, EXTRA. 



Foresters, lanscape architects, educators 

 and all those who wish to bring about the 

 highest forms will welcome the third edi- 

 tion of a classical work on one of the most 

 fascinating branches of forestry. 



The first edition of Forstaesthetik, or 

 Forest Aesthetics, appeared as a small duo- 

 decimo volume in 1885; the second, much 

 enlarged and improved, in 1902. The third, 

 1911, is still broader in its scope and has 

 been re-enforced by twelve new chapters 

 and sixty additional illustrations. 



Part I deals with fundamental principles; 

 Part II discusses their practical application. 

 Each part is divided into two sections 

 Section A of part I embraces a discussion 

 of terms and fundamental ideas, justifies 

 the consideration of aesthetic values in 

 practical forestry, and determines the posi- 

 tion of forest aesthetics in the curriculum 

 of forest schools. Section B of part I 

 gives us an insight into the components of 

 the forest as elements of beauty and lets 

 us understand how effects of a higher order 

 are produced by their combination. The 

 discussion aids us to appreciate the beauty 

 of expression of trees and woodland veg- 



etation, the scenic values of mountain, valley 

 and plain, the character of rocks, the fauna 

 and flora of the forest, light and shade, 

 color, sound and all that appeals to our 

 senses and the imagination in the atmos- 

 phere of the forest. This section includes 

 some references to American species that 

 have been introduced into Germany, 

 (p. 121.) 



Part II is likewise divided into two sec- 

 tions. In section A the ideas set forth in 

 part I are applied to the actual work of 

 the forester, to the construction of road 

 systems and the several systems of manage- 

 ment, including the questions of rotation, 

 compartments, thinning, pruning and re- 

 generation. 



Finally, in section B of part II the author 

 goes a step further and discusses the pos- 

 sibility of forest "adornment" by way of 

 the beautification of roads, openings, views, 

 the preservation of historic landmarks and 

 individual old trees, etc. He is careful here, 

 as in other passages of the book, to make 

 a careful distinction between the economic 

 forest and the park. 



From the preceding outline the reader 

 will conclude that this is not a mere theo- 

 retic or philosophic inquiry. He will find 

 throughout this book a thorough and mas- 

 terly treatment of the subject. He will find 

 that both theory and practice have been 



