Arizona AgricuIvTurai, Expi^riment Statiox 433 



as soil requirements, when and how to phmt roses, the care and 

 pruning- roses, and some common rose troubhis are discussed. 



During the early part of the year considerable time was spent 

 in the preparation of a comprehensive bulletin on the shade and 

 ornamental trees of the State. When about one-half complete this 

 was stopped temporarily on account of work of more immediate 

 importance, including certain emergency grazing range i)ublica- 

 tions which are now well under way. 



SCIENTIFIC 



The waiter has spent approximately one-fourth of his tune 

 during the past year in work on the herbarium of the University. 

 This has consisted mamly in examining and identifying plant col- 

 lections and supervising the mounting of these. Fully 15,000 speci- 

 mens have thus been mounted and added to the plant collections 

 during the year. With these additions the herbarium contains 

 about 70,000 sheets. This particular phase of the work of the Hora 

 of the State has been given special attention for more than three 

 years and is now nearing completion. Of the large plant collec- 

 tions that have been made during the last 16 years, for the most 

 part by the writer, less than 4,000 specimens remain now to be 

 worked over and mounted. It is planned to complete this work 

 during the present year. Every efifort has been made to have this 

 collection as complete as possible so that it will be a valuable 

 consideration in further economic and scientific work on the liora. 

 It is almost needless to state that the University is the logical 

 place for a collection of this kind. 



Perhaps at no time in the future will it be' necessary for the 

 head of this department to give so large a part of his time to this 

 kind of work. Unfortunately, work of this technical character 

 cannot be delegated to others with any degree of economy or satis- 

 faction. While this work does not lend itself directly to publica- 

 tion, it is, nevertheless, fundamental and must be done in advance 

 of any serious comparative study of our flora. Once our plant col- 

 lections are worked over, mounted up and assembled so as to be 

 readily accessible, intelligent work looking towards a publication 

 can be done on any part of our flora or on the flora as a whole. 



J. J. TtiornrKk. 



Botanist. 



