413 
Macadamia (Proteaceae). 
A well-known Australian plant, M. ternifolia, F. Muell., the 
“Queensland Nut,” must, according to my analysis at Kew, be 
considered among the most strongly cyanogenetic plants; in the 
fresh leaf the HCN content was more than 0°1 per cent. 
Our chemical knowledge of this order is still very slight. 
Michelia (Magnoliaceae). 
The leaf of MW. fuscata, Bl., has an astringent bitter taste. The 
bitternéss was found to be due to an alkaloid, present in 
considerable quantity. In the filtered aqueous decoction, the 
general alkaloidal reagents such as picric acid, iodine and Mayer s 
reagent, and also mercuric chloride, produce heavy precipitates. 
I have prepared the alkaloid in the pure state according to the 
method of Stas-Otto; it is soluble in excess of ammonia, 
At Buitenzorg, Eykman found an alkaloid in M. parvifolia, Bl., 
in 1885, and I myself found one in M. Champaca, L., in 1890. 
See Mededeelingen uit ’s Lands Plantentuin, xxv., p. 
Napoleona (Myrtaceae). ‘ 
The leaf of N. Whitfieldii, Van Houtte, was found to contain 
saponin. : . 
The genus has been included in Myrtaceae and in Lecythidaceae ; 
in the latter order saponin is of general occurrence. 
Nicodemia (Loganiaceae). : ; 
The leaf of N. diversifolia, Ten., has a high saponin content. 
The genus is closely related to Buddlera, which has long been 
known to contain saponin and to be poisonous. 
Oldenburgia (Compositae). aot ne 
The leaf of i meena DC., contains saponin in addition to 
tannin. ; 
Olearia (Compositae). . P 
he a O. Pee Bak., was found to contain ns gee 
Olearia (= Eurybia, Cass.) is closely related to Aster an 
Erigeron, 
‘ca, Gaud., has an 
lapponica, f saponin. On 
Paliurus (Rhamnaceae). oa 
If. she todinge fe r. pe age a oe. ae 
i ae Monotropa Hypopity®s L., as 
to the same extent. 
bruised, a strong odour 0 
Among native plants I on 
containing oil of winter green 
14870 
B 
