57 



Results of Measurements, 1891 



These figures make evident two facts : first, that the influence due 

 to the nitrate of soda was sustained throughout the period of the 

 growth of the tops ; and second, that the yield of tubers was not in 

 all cases proportional to the growth of the tops. 



Summary of Weather Observations, May 1 to Sept. 3, 1891. 



152 days. 



This station, as in previous years, shows a high degree of variation ; 

 and as in previous years also shows the highest temperature recorded 

 at any of our stations. The rainfall was well distributed and the 

 amount was adequate to the requirements of vegetation ; and the 

 season on the whole was favorable to the crop. 



