Reports of Trials for Murder by Poisoning; / by Prussic Acid, Strychnia, Antimony, Arsenic, and Aconita. Including the trials of Tawell, W. Palmer, Dove, Madeline Smith, Dr. Pritchard, Smethurst, and Dr. Lamson, with chemical introduction and notes on the poisons used

by G. Lathom Browne; active 19th century C. G. Stewart

Amygdalus communis (almond), Persica (peach), lævis (nectarine).

Armeniaca vulgaris (apricot).

Cerasus communis (cherry), acida, laurocerasus (cherry-laurel), Lusitanica (Portugal laurel).

Cydonia vulgaris (quince).

Sorbus aucuparia (mountain ash), torminalis, hybrida.

Cratægus oxyacantha (hawthorn, young branches).

Spiræa aruncus, sorbifolia, japonica (not in herbaceous species).

Hydrocyanic acid, ready formed, has been found in the roots of the bitter and sweet cassava (Jatropha manihot).

If the poisonous dose of the B. P. (2 per cent.) acid be at least 30 minims (Royle’s Mat. Med., Dr. Harley, 6th ed.) the following table shows the amount of some of the above which is needed.

Substance.	Percentage of amygdalin.	Equal to HCN per cent.	Amount required for poisonous dose.		Observer.
Cherry kernels	3	0·18	333	grains	Gieseler.
Pips of sweet apples	0·45	0·027	2222	”	C.G. Stewart.
Pips of bitter apples	0·85	0·051	1176	”	”
Wild service kernels	1·5	0·08	750	”	Hermann
Flowers, fruit, and bark of do.	1·0	0·06	1000	”	Riegel.
Bitter almond pulp	4·25	0·25	240	”	Allen.
Sweet Cassava		0·017	3500	”	Francis.
Bitter do.		0·027	2222	”	”