Doctoring Trees. 
007 
plain and indisputable as to the mere fact of a check given to the 
approach of death, and a renewed vitality being obtained in a space of 
time comparatively short, that I venture to point out my experiments as 
indicating a short road to knowledge which others may travel, and take 
a more extensive view of the country than I myself have been able to 
do. First, then, as to the condition of the soil and subsoil as shown by 
the analysis. 
Anali/sis of Soils from Carclew. — 1st. Surface soil from the planta- 
sion on Mylor Downs. The water in which this soil was infused yielded 
a little muriate of soda, and gave traces of iron. 
The soil was freed of the larger stones by being sifted through a coarse 
sieve, and the vegetable fibre was carefully picked out (The other soils 
were treated in the same manner) : — 
Hunt. 
Silica and silicious sand . • . 
83 
25 
Alumina ...... 
4 
•10 
Carbonate of lime .... 
1 
■ magnesia . . . 
15 
Suli;hate of lime .... 
75 
Peroxide of iron, witli a trace of protoxide 
•1 
50 
Potash 
2 
25 
Humus ...... 
2 
A'egetable matter, insoluble in alkalies , 
1 
58 
Muriates ...... 
42 
Phosphate of lime .... 
100 
00 
100 grains of this soil lost in drying, at common temperatures, six 
grains of water; and by exposure to heat insufficient to char the veget- 
able matter it contained, it lost three grains more of water and volatile 
matter. 
2nd. Subsoil from the same spot about 18 inches below the surface. 
The water in which this was infused gave indications of muriate of soda, 
but nothing else. 
100 grains lost in drying at common temperature four, heat dissi- 
pated seven grains of water, &c. 
Himt. 
Silica and silicious sand ... 
76-50 
Alumina ...... 
. 10-10 
Carbonate of lime .... 
1-20 
magnesia 
•25 
Peroxide and protoxide of iron . . 
5-10 
Sulphate of lime .... 
1-25 
Pliosphate of lime .... 
•25 
magnesia . . . 
•15 
Potash . . . . . 
3^ 
Humus ...... 
1.15 
Vegetable matter, insoluble in alkalies . 
•30 
Mui'iates. ..... 
•75 
lOO^CO 
It will be seen that this subsoil contains some phosphates which could 
not be detected in the surface soil or in the clay below it. 
3rd. Clay from the same spot below the subpoil. Infused in water 
