374 ANACARDICEZ. 
petioles and midribs of the leaflets are covered with a reddish 
brown tomentum ; the leaflets are hairy and very astringent. » 
Chemical composition.—The leaves contain colouring matter 
and 14 to 1:-5 per cent. of tannin (Hwmmel), and are used in - | 
dyeing and calico printing as a substitute for gall nuts, in the 
production of grey colours, and in Turkey red dyeing; also for 
tanning the finer kinds of leather. According to Chevreul they 
contain a yellow colouring matter, which separates from a 
concentrated decoction on ‘cooling in small crystalline grains. 
‘The decoction forms a yellow precipitate with solution of 
alum, shows a strongly acid reaction with litmus, gives a 
yellowish white precipitate with stannous chloride, pale yellow 
with acetate of lead, yellowish brown with cupric acetate, and a 
blue flocculent precipitate with ferric chloride. Tromsdorf 
found in the fruit a large quantity of bimalate of lime. 
Commerce.—The fruit is imported into Bombay from Persia. 
Value, 6—8 annas per Ib. 
The fruit of an Indian Rhus, probably R, parviflora, Roxb., 
or perhaps 2. semi-alata, Murray, called in Hindi Tatrak, is 
sometimes substituted for it. : 
PISTACIA INTEGERRIMA, Stewart. 
Fig.—Brandis, For. Fl. 122, ¢. xxii. Syn.—Rhus Kékra- 
singi. ie =e A 5 
Hab.—Sub-alpine Himalaya. The galls. 
Vernacular.—Kakrasingi (Mar., Guz.), Kaékar-singi (Hind. )s 
Kékra-sringi (Beng.), Kakkata-shingi (Tam.), Kékara-shingi 
( Tel.), Dushtapuchattu (Can.). 
History, Uses, &c.—These galls, called in Sanskrit 
Karkata-sringi, have long held a place in the Materia Medica 
of the Hindus. They are considered tonic, expectorant, and 
useful in cough, phthisis, asthma, fever, want of appetite, and 
irritability of stomach. The usual dose is about 20 grains 
combined with demulcents and aromatics. Mahometan writers 
describe them as hot and dry, useful in chronic pulmonary _ 
Snot 
