336 Twelfth Annual Report. 



vation have been planted in small quantities. Here moderate 

 irrigation is practiced. One of the objects of this garden is to 

 form a check upon the seeded plots on the reservation. 



Owing to the diversity of climatic and soil conditions which 

 obtain in southern Arizona, it has been thought wise to extend 

 operations over a greater variety of territory than would be pos- 

 sible in the immediate vicinity of the University. Consequently, 

 a plan was inaugura to co-operate in the matter of range im- 

 provement with farmers and ranchers who were located in favor- 

 able situations. Aside from the work performed directly by the 

 writer, experiments are being conducted at nine other stations in 

 southern Arizona. In all of these cases those interested are do- 

 ing the work with seed distributed from this Station. 



In connection with the range work, three precipitation rec- 

 ords are being taken, in order to determine to what extent varia- 

 tion in this particular obtains. The extremely local condition of 

 rainfall during the summer season is a matter of common obser- 

 vation. It is, therefore, necessary that the relative rainfall of differ- 

 ent areas be known in order to render more intelligently the sig- 

 nificance of the experiments conducted upon them. 



THE AUSTRALIAN SALTBUSH. 



Encouraged by the experiments which have been conducted 

 with this plant, the Station made a distribution of seed to 

 those who applied for the same according to the offer made 

 in Timely Hint No. 33. This valuable forage plant is now 

 well distributed over the Territory, and it is hoped that if it proves 

 to be adapted to this climate, it is well established. A portion 

 of the seed distributed was furnished by the Division of Agros- 

 tology, U. S. D. A., and the remainder was kindly donated by 

 the authorities of the California Experiment Station to whom 

 acknowledgments are due. 



PARASITIC FUNGI. 



Considerable attention has been paid to this important line 

 of investigation. While our correspondence has not been great 



