20 
BULLETIN 5 9, HAWAII EXPERIMENT STATION 
vegetative method of propagation as by cuttings, air layering, or 
grafting. Mr. Rumsey states that statistics do not show what quan- 
tity of Macadamia nuts are produced and sold in Australia. Most 
of those marketed are collected from the forests or from the groves 
of farmers. There is a growing demand in that country for all the 
Macadamia nuts it produces. They sell at prices varying from G to 
10 pence per pound wholesale and from 1 shilling 6 pence to 2 shil- 
lings retail. They are also sold without being graded, but as the 
supply and demand increase the nuts will likely be sorted according 
to size by being run through sizing screens. (Fig. 9.) Grading will 
probably become necessary when cracking machines are generally 
used in the nut industry, and care must then be taken to avoid break- 
ing the kernel. Broken kernels, however, may be used in the prepa- 
ration of nut butter and some forms of confectionery. 
Figure 9. — Seedling Macadamia nuts showing variation in size and structure 
COMPOSITION AND USES 
In composition the Macadamia nut is similar to most other edible 
nuts. Table 1 affords comparison of the composition of the edible por- 
tion of the Macadamia nut with that of some other nuts and fruits. 
Table 1. — Comparison of composition of Macadamia nu 
nuts and fruits 
I and some other edible 
Variety 
Protein 
Fat 
Total 
carbo- 
hydrates 
Ash 
Crude 
fiber 
Water 
Per cent 
Per cent 
66.73 
66.00 
33.40 
41.56 
54.90 
64.40 
70. 50 
21.00 
29.14 
Per cent 
2.67 
15.40 
6.41 
Per cent 
1.622 
1.700 
1.020 
2.588 
2.0C0 
1.700 
1.9C0 
2.700 
1.350 
Per cent 
1.92 
5. 10 
5.45 
1.27 
2.00 
1.40 
Per cent 
Do- 
8.8 
4.20 
14.43 
21.00 
18.40 
9.60 
1.40 
1.25 
3.00 
( !ashew nut i 
Almond 3 
California English walnut * .. . 
17.30 
13.00 
15.30 
3. 50 
7.40 
4.80 
2.50 
Pecan 
2.70 
Olive (ripe) 3 
52. 40 
Avocado (Fuerte) * 
60.86 
i (18, p. 68.) 
2 (17, p. 15-17.) 
(S, p. 70, 74-75.) 
* (12, p. 16.) 
