150 
is rather against it, from the inevitable association with cheap hair-oil.The oil is beauti¬ 
fully white, and the odour is very penetrating and endurable, so that there is every likelihood that it may 
find use in the manufacture of soap.From the moderately dry leaves the yield is about 
520 oz. to the ton, from fresh leaves 270 oz. 
Following are some other references to literature of the oil of var. cilrioclora :— 
Thoms (Dr.)—Oil of Eucalyptus maculata, var. citriodora. Phamn. Centralh., 13th August, 1891, 
p. 469; Pharm. Journ. [3], xxii, p. 165. Expresses the opinion that the oil possesses no therapeutic 
properties not equally shared by citronella oil. 
Kremers (E.)—On Citronellone ; an unsaturated fatty aldehyde. Am. Chem. Journ. 14, p. 203 ; 
Journ. Sue. Chem. Ind., xi., p. 935, November, 1892. 
Semmler (F.W.)—Citronellal (Citronellone) Ber. 26, 2254 (1893). Journ Soc. Chem. Ind. xii, 
p. 1054, Dec. 1893. 
See also a paper on oil of Euc. citriodora. [Pharm. Journ., 5th September, 1896, p. 200.) 
Messrs. Baker and Smith (Research on the Eucalypts) give the following 
particulars in regard to the oils of E. maculata and E. citriodora respectively. 
They should he compared with the analyses of Messrs. Scliimmel & Co. quoted 
above :— 
Sp. gravity at 
159° C. 
Sp. rotation 
Md. 
Saponification 
number. 
Solub. in Alcohol. 
Constituents found. 
0-8959 to 0-9201 
+ 5-7° to + 18-37°,. 
6'47 to 9 56.. 
1 vol. 80 % to 4 
Pinene, eucalyptol, sesquiterpene. 
vols. 80 %. 
0-864 . 
- 1-15° . 
7-5. 
llvols. 70% ... 
Citronellal, esters. 
Sucker Leaves (Use of the term “Sucker” in Australia).—The sucker 
leaves of the Spotted Gum {see figure) are more broadly lanceolate than the mature 
foliage. 
In referring to an Australian work, two writers, penning a joint letter, 
criticise the use of the term “ sucker” as used in Australia. 
I largely use the term in the Australian sense, and propose to inquire into 
the correctness of such use. 
Following is the passage :— 
A minor fault .... is the use of the word “ sucker.” By “ sucker” is properly understood 
shoots from the roots, such as one sees in poplars, elms, and willows. (1) Eucalypts do not sucker 
(2) (except rarely and accidentally), and the authors use the word in the sense of “coppice shoot.” 
(3) No doubt “ sucker” is an Australian colloquialism, but, naturally, the use of slang expressions (4) is to 
be avoided in a scientific work. To be accurate, the authors should use the term early or first foliage (5) 
or its equivalent, since this important diagnostic feature is seen in the first foliage of Eucalypt seedlings 
equally with coppice shoots.* 
The numbers are my own, and will be convenient for reference. I suppose 
there is no greater English-speaking authority on forestry than Schlich. f and I 
propose to quote him :— 
(1) Sucker, or Rootsucker, means a shoot which has sprung up from a root. (Schlich i. 7.) 
* “ Nature,” August 6th, 1903, p. 231. 
t A Manual of Forestry, W. Schlich (in 5 volumes), London, 1896. 
