[SHUTT] NITROGEN COMPOUNDS IN RAIN AND SNOW 59 
Eviden<e of the greater richness of the rain in nitrogen compounds 
—especially in free ammonia—is again to be noted, though the differ- 
ence between the rain and snow is this regard is not so marked as 
in the year 1908-09, the unusual or abnormal character of which has 
been pointed out. 
The averages of the year show that in both rain and snow the 
proportion of nitrogen as free ammonia is largest, and that as albuminoid 
ammonia the smallest—a result agreeing with the findings of the two 
previous years. 
A rather remarkable fact is brought out by taking the averages 
for the season, namely, that the percentages of the total nitrogen 
present in the three forms are the same for both rain and snow. 
