An Appreciation of Dr. Heinrich Mayr. 269 



trip around the world with Prince Ruprecht of Bavaria, he pro- 

 duced a master work in the book entitled "Fremdlandische Wald 

 und Parkbaume fiir Europa." Nothing so extensive in either 

 describing distribution of species or discussing their adaptability 

 for European conditions had ever been prepared before. The 

 book is illustrated with an unusual number of photographs and 

 drawings, many of them by Dr. Mayr himself, and many loaned 

 by the United States Forest Service. 



In connection with the teaching of Silviculture proper in the 

 University of Munich, Dr. Mayr taught Forest Utilization and 

 Forest Protection also. The classic work on Forest Utilization 

 by Dr. Karl Gayer was revised several times by Dr. Mayr, the last 

 edition being entitled "Die Forstbenutzung," Tenth Edition, by 

 Gayer and Mayr. At time of his death Dr. Mayr was at work 

 upon a book describing at length the results of his years of work 

 at the Bavarian Forest Experiment Station at Grafrath. It is a 

 great loss to forestry that he was not able to complete this work. 

 The books mentioned above were not the only products of Dr. 

 Mayr's great energy. He assisted in editorship of several forestry 

 publications and produced many pamphlets upon various questions 

 which have and are agitating the forestry world in Germany, 

 such for instance as the influence of source of seed upon future 

 crop. 



Few men have had and used as effectively the wonderful gift 

 of teaching in the way in which Dr. Mayr did. His great 

 earnestness and power to present matters in a clear, logical way 

 coupled with his ever pleasing personality, gave him always a full 

 class room and attracted men to him from all over the world. 

 During the last year of Dr. Mayr's life he was ailing constantly 

 and yet was ever cordial and sympathetic and ever ready to help 

 the student and especially the stranger. 



In being a silviculturist Dr. Mayr was also an ecologist and a 

 botanist, if the first two lines of work can be separated at all. 

 His memory was wonderful and he carried apparently clearly 

 outlined in his mind the nomenclature of the entire forest flora 

 of the world. His extensive travels, while making possible the 

 excellent books he produced, in a way caused him to over- 

 generalize, especially in lectures, more than a man of less wide 

 experience would have done. He was also at times rather em- 

 pirical and radical, and impatient with the opinions of other 



