I 12 



Material of this species was also obtained from near Broken Hill, New South 

 Wales, in July, t8g8. The yield of oil was i-ig per cent. The constituents 

 in this oil and its general characters agreed very well with that from the Nyngan 

 material. The specific gravity at 15° = 0-9065, saponification number = 8, and 

 the oil was soluble in i| volumes 70 per cent, alcohol. The cineol determined 

 by the phosphoric acid method in the crude oil was 48 per cent. (O.M.). 



Oil was distilled from this species by .Mr. 1'. K. H. St. John in 1916, from 

 trees cultivated in Melbourne, and forwarded to the Museum for investigation. 

 The yield of oil he obtained was 0-83 per cent. The crude oil had specific 

 gravity at 15 = 0-9153; rotation a D + 3-5°; refractive index 1-4583, and was 

 soluble in ij volumes 70 per cent, alcohol. The saponification number for the 

 esters and free acid was 6-6. The cineol in the crude oil determined by the 

 resorcinol method was 69 per cent. It is thus seen that this oil agrees fairly 

 well with the above samples from Nyngan and Broken Hill, and differs entirely 

 from the oil of the type E. rostrata, which species gives equally constant oil 

 results. (See under that species.) 



57, Eucalyptus camphor a, 



(R.T.B., Proc. Linn. Soc, N.S.W., 1900, p. 298, t. XXII.) 

 Sallow or Swamp Gum. 



Systematic. — A small tree, about 20 to 40 feet high in northern specimens, 

 but a fair sized tree in the south. Abnormal leaves ovate, obtuse, under 6 inches 

 long, 3J inches broad, on angular petioles of J inch long, coriaceous, glaucous. 

 Normal leaves ovate-elliptical, abruptly acuminate, under 4 inches long, or 

 lanceolate, acuminate and 6 inches long, thinly coriaceous, glaucous; venation 

 distinct, particularly in young leaves, intramarginal vein removed from the edge. 

 Peduncles few, axillary, flattened, bearing five or six short pedicellate or sessile 

 buds. Calvx turbinate, inclining to hemispherical, 1 line long, 1 line broad; 

 operculum acuminate, about 2 lines long. 



Fruit. -Small, turbinate; rim flat; valves exserted ; 

 3 lines long and 2 lines in diameter. 



The fruits with care can generally be distinguished 

 from E. paludosa (which they resemble in ^IniJ-e), by 

 their smaller size- 



Habitat. It was discovered (R.T.B.) at Ganguddy. Creek, 

 Kelgoola, Rylstone, in 1895, afterwards in 1897 

 at Narango and since recorded from the South 

 1 u.i i, N.S.W., well into Victoria. 



