On Evaporation. 16 1 
was remarkably fair and healthy, and no signs of blight appeared 
on the branches. 
Perhaps the reader would wish to know how it was with the 
upper branches on which no lime was put. I answer by saying, 
that the fruit on them was less abundant and less fair, although 
in the common way the upper branches bear more and better fruit 
than the lower ones. I made the same trial with my plum trees, 
except one; they all bore well, with the exception of the one on 
which I put no lime; and although that was the best and most 
thrifty tree of the whole, and blossomed well, yet it scarcely had 
any plums. 
When my young trees came into blossom, I also tried lime in 
the same way; they bore well, showed very little signs of blight, 
while the young shoots on my neighbors' trees were from one- 
fourth to one-third dead by the first of 8th month, (August). I 
may also mention, when I took my quinces to market they sold 
for double the price that my neighbors obtained for theirs. 
This is the first year that I have made the experiment; it may 
not succeed another year as it has this, but I intend to try it on a 
much larger scale than I have done the past year. I think also I 
shall repeat it about the middle of the 6ih month, (June) as I dis- 
covered last year that it would be better to apply it by that time. 
Chatham, 1st month, (Jan.) 1848. 
ON EVAPORATION. 
BY J. TREMPER. 
The process of evaporation is perhaps one of the most useful, at the 
same time unobserved, operations that takes place among nature's 
works. Its effects are constant and unremitting, and if suspended 
for an interval in one place, its course is onward in another. From 
each and every object there is an exhalation to supply the reser- 
voirs above, whence it is poured at proper intervals, to feed the 
brook, the river, and the ocean, and to spread its fertilizing influ- 
ence as well upon the field, the meadow, as the garden, Mr. 
Dalton, of Manchester, England, has made some very interesting 
experiments upon the subject of evaporation, by providing a suit- 
able apparatus, filling it with soil, and burying it in the ground, 
leaving the upper surface exposed to the atmosphere. He found 
the mean of nine years observations to be as stated in the follow- 
ing table: 
11 
