166 QUINCE CULTURE. 
WOOD OF THE QUINCE TREE, 
KILLED BY BORERS. 
1 O6,4+-C+ 
CONSTITUENTS CO,+G 2 
DETERMINED. A B MEAN. | FREE Lae 
Si O, 6.24 6.34 6.29 2.06 
P, O 2.92 2.78 2.85 4.10 4.51 
Fe, Os 0.78 0.78 0.78 1.12 1.23 
Al, O3 0.50 0.50 0.50 0.72 0.79 
CaO 41.74 41.66 41.70 60.05 66.03 
MgO 4.92 4.85 4.88 7.03 7.73 
20 10.49 10.42 10.45 15.05 16.56 
Na, O i Ea) 1.75 1.75 2.52 2.77 
S Os 0.24 0.24 0.24 0.35 0.38 
Cc O2 *30.38 *30.38 *30.38 
0.44 0.47 0.46 
Ss trace trace trace trace trace 
Cl ““ 6é 6e “ es 
Total, 100.40 100.17 100.28 100.00 100.00 
* Mean of 4 analyses. 
KILLED BY BLIGHT. 
3 ES. CO,+C+ 
CONSTITUENTS CO,+C a 
DETERMINED. A B MEAN. | FREER. pte 
SiO, *3.80 *3.80 *3.80 4.86 
P, O 4.31 4.30 4.31 5.51 5.80 
Fe, Os 0.42 0.42 0.42 0.54 0.56 
ASO; 0.14 0.08 0.11 0.14 0.15 
CaO 45.18 45.18 45.18 57.81 60.77 
MgO 4.67 4.63 4.65 5.95 6.25 
K,O 418.20 418.20 718.20 23.29 24.48 
Na, Oo 40.27 70.27 70.27 0.35 0.36 
S 0, 1.32 1.11 1.21 1.55 1.63 
co, 21.35 21.43 21.39 
*0.40 *0.40 *0.40 
Ss trace trace trace trace trace 
Cl 66 77 “ ‘ec 
Total, 100.06 ! 99.82 99.94 100.00 100.00 
*Qne analysis; { mean of 3 analyses. 
