350 Canadian Record of Science. 
manures. The effect upon the trees was most marked, 
The leaves were of an unusual size and depth of color, and 
the growth of each year was far in excess of any other 
trees. But, although twelve years old at the date of last 
observation, and thus nine years older than the age at which 
fruit should be formed, they had not produced a single 
peach, nor did there appear to be any likelihood of their 
doing so. In other words, under the special conditions of 
growth established, the fruit producing function had been 
wholly arrested, and the trees were therefore worthless. 
A remedy for this would be found in a reduction of the 
nitrogenous foods, and a greater supply of mineral foods. 
A still further application of this principle will probably 
permit us to bring fruits to maturity more perfectly than 
now, and also enable us to overcome the disastrous effects 
of early frost where trees tend to continue their growth too 
late in the season. These facts therefore suggest one im- 
portant direction in which these laws of nutrition may be 
applied. 
We will now turn our attention more particularly to a 
consideration of improved varieties and the relation of such 
improvement to the composition of the ash, and in doing so 
we shall make use of results obtained by the investigator 
already quoted. The fruit of the wild strawberry (Fragaria 
vesca) contains, according to the analysis of Richardson, 
0.41 per cent. of ash. In this we find 
LOUD SoG HOIBHOO Gres sto CIRO On TARTS: aac ioipy aan 22.06 
Sod aisles deeds Chauats ia toher stepocstela ls cxerare alae eictaracioneia 29.79 
f Bilas YOR ae lorie DBT DONT CE TCR ein ae a Heo emacs c 14.88 
IND GTeha os ooikd ao Ho NloDKOOod Dog bon OCOmen so DOCH ndos d traces 
DTOM ee BES wee ene eel e eae meee Leica Neral ee Rea keane 6.07 
phos plOricia cide eer erm eteireletleteloietereneta 14.47 
SiG a s/d, c ccvsre les ale otawe ovate nae eotemeyey alee late sum aileiteSroreneregete-cuees 12.62 
this calculation being made after deducting sulphuric acid 
and chlorine, for reasons which need not be specified at the 
present time. 
As determined by Goessmann, the fruit of the cultivated 
