PREFACE. vii 



in the several natural divisions of the State. In his notes on 

 the forests of Southern New Jersey, Mr. Vermeule has made 

 use of the report of Mr. Pinchot. The sections on "The Effects 

 of Fire," "The Plains," and " Silvicultural Notes on the White 

 Cedar," are by Mr. Pinchot. Two important sections at the 

 end of this Part, on " Forests and Water-Supply " and " Forests 

 and Climate," contain the conclusions of Mr. Vermeule's years 

 of study of the great question of water-supply and its relations. 



Part II, " The Relation Between Forestry and Geology in 

 New Jersey," is by Prof. Arthur Hollick. It contains many 

 facts about the distribution of the more common trees of the 

 State and discusses their relation to the geological formations 

 and the evolution of the tree species. Professor Hollick divides 

 the State into a zone of deciduous or broad-leaved trees, a Con- 

 iferous Zone, and an intermediate one wdiich he terms " The Ten- 

 sion Zone." 



Part III, "The Role of Insects in the Forest," is contributed 

 by Professor John B. Smith, of New Brunswick, and State 

 Entomologist. 



Part IV, "The Forestal Conditions and Silvicultural Pros- 

 pects of the Coastal Plain of New Jersey," is by Dr. John Gif- 

 ford, Professor in the New York State College of Forestry at 

 Cornell University. His report has many notes on the condi- 

 tions of the forests in the southern part of the State, and many 

 suggestions about industries which may help the land-owner, 

 and practical recommendations for protection against fires, as 

 drawn from his observations of the Belgian Campine, in the 

 Landes of France and the heath-lands of Northern Germany. 



The Introduction is by the State Geologist. 



The meteorological statistics in the section on " Forests and 

 Climate," in Part I, were furnished by E. W. McGann, Section 

 Director of the New Jersey Weather Bureau, for the New Jersey 

 stations. The results of the studies of these official records of 

 temperature and rain-fall are condensed in graphic form in the 

 State maps, Plates XI, XII and XIII. After Mr. Vermeule's 

 investigation and careful study of these records in relation to 

 forested areas, the plan of this report, including a part on 

 " Forests and Climate," was changed, and the paper was 

 omitted. 



