68 R. T. BAKER AND H. G. SMITH. 
This fraction had specific gravity 0°8976; refractive index 
1°4681; and rotation ap + 3°0°. Between 175-—183°C., 
52” distilled, this had specific gravity 0°9003; refractive 
index 1°4692, and rotation ap + 2°9°. Between 183 — 250° C., 
23°> distilled, this had specific gravity 0°9136; refractive 
index 1°476; androtation ap + 4°4°. Between 250 — 258° C., 
4°) distilled, this consisted largely of the sesquiterpene; it 
had specific gravity 0°9233; and refractive index 1.5011. 
It was distinctly acid, thus showing the presence of an 
ester. By the phosphate method the crude oil contained 
16” of cineol. The saponification number for the esters in 
the crude oil was 6°4. 
A portion of the oil was esterised; 2°0134 grams of this 
required 0°0812 gram potash, saponification number =40°3. 
The amount of the alcohol in the oil of this species is thus 
a little more than with that of M. thymifolia. The crude 
oil was insoluble in 10 volumes 70” alcohol. It was soluble 
in 1 volume 80” alcohol and was only very slightly turbid 
with 10 volumes. 
EXPLANATION OF PLATES. 
Transverse Sections of Leaves. 
Melaleuca thymifolia. 
Fig. 1—Shows the irregular occurrence of three oil glands in the 
leaf tissue. 
Fig. 2—Shows oil glands in a different position to those in fig. 1 
and also the large number of air cavities on the ventral 
surface. The guard cells are also very clearly seen. 
Fig. 3—This section contains two large oil glands. 
Fig. 4—Here only one small oil gland is seen in that portion 
of the leaf sectioned; the air cavities are very numerous. 
Figs. 1 to 4 are all magnified 50 diameters. 
Fig. 9—An enlarged portion of the edge of a leaf blade of 
thymifolia, x 250. 
Fig. 10—Rough sketch of Fig. 9, x 250. (a) Epidermic cells. (6) 
Palisade parenchyma. (c) Spongy parenchyma. (d) Vascular 
