266 



EXPERIMENTAL FARMS 



4 GEORGE V., A. 1914 



The principal data for the year are recorded in the following table, comprising 

 monthly totals of precipitation, the average nitrogen-content for the month expressed 

 as ' free ' and ' albuminoid ' ammonia and as ' nitrates ' and ' nitrites.' The last 

 column gives the pounds of nitrogen, so supplied, per acre. 



Rain and Snow at Ottawa for the Year ending February 28, 1913. 



Month and Year. 



1912. 



March 



April 



May 



June 



July 



August 



September 



October 



November 

 December 



1913. 



January . 

 February 



Precipitation in Inches. 



Rain. 



GO 

 15 

 35 



89 

 94 

 01 

 47 

 59 

 17 



217 



30-34 



.Snow. 



14-00 

 2 00 



23 00 



10-00 



23 75 

 23-50 



9H25 



Total 

 in Inches 

 of Rain. 



■40 



•80 



15 



•35 



-89 



94 



01 



47 



•89 



17 



454 

 235 



39-96 



Nitrogen. 



In Free 

 Ammonia. 



p. p.m. 



•29 

 •79 

 •61 

 •55 

 "34 

 •31 

 •39 

 •37 

 •38 

 •31 



•21 

 13 



In Albu- 

 minoid 

 Ammonia. 



p. p.m. 



•07 

 •28 

 •04 

 •14 



06 

 •07 



10 

 •09 

 •07 

 •29 



•07 

 •06 



In 



Nitrates 



and 

 Nitrites. 



p. p.m. 



11 

 21 

 28 

 34 

 30 

 17 

 18 

 18 

 13 



32 



•05 

 13 



Total. 



p. p.m. 



•47 



1-28 



•91 



103 



•70 



■55 



•67 



•64 



•58 



P2 



S3 

 •32 



Pounds 



of 

 Nitrogen. 

 per acre. 



149 

 •815 

 .062 

 •315 

 •617 

 •616 

 •609 

 •358 

 •642 

 •452 



■339 

 170 



6144 



Attention may be directed to the more salient features in the foregoing tabls 

 and one or two comparisons made with similar data from previous years. The total 

 precipitation, 39-96 inches, is considerably higher than that recorded since the begin- 

 ning of the investigation, 1907, and exceeds that of the average for 22 years by prac- 

 tically 5A inches. As the snowfall for the year was practically normal, it necessarily 

 follows that the increased precipitation was as rain, which was considerably heavier 

 in May, August and September. The rainfall of 2-17 inches during January may be 

 quoted as exceptional, and this serves to explain the larger amount of nitrogen for 

 that month than has usually been found. 



The total nitrogen for the year amounted to 6-144 pounds— an amount practically 

 identical with that of the preceding year and, excepting the year ending February, 

 1909, when the results were abnormally high owing to bush fires, -403 pounds, above 

 the average for the period of investigation February, 1907, .to February, 1913. 



The precipitation data and amount of nitrogen per. acre for the past six years 

 are given in the following table: — 



