APPENDIX. 141 
sa treated assumes a more ar less dark colour, which is tolerably 
persistent, but nothing is said as to the exact tint. Itis obvious that 
anacardic acid used for this purpose must be quite free from the 
acrid cardol that accompanies itinthe nut. Herr Gawalowski directs 
that it should be prepared by treating the residue from the evapora- 
tion of an ethereal extract of the crushed pericarp with water as 
long as the washings showed traces of tannic acid, then dissolving it 
in 15 to 20 parts of alcohol, shaking the solution vigorously with 
freshly precipitated lead hydrate, filtering and washing the precipitate 
with alcohol and decomposing the lead salt so obtained with freshly 
prepared sulphide of ammonium and filtering. Upon strongly cooling 
the filtrate, which contains the ammonium salt of anacardic acid ae 
excess of ammonium sulphide, and treating jt with sulphuric acid, 
the acid separates at once as a soft mass, which after being presse 
hetween filter paper is dissolved in ammonia and then remains soluble 
in water. According to Dymock (Veg. Mat, Med, W. Fnd., p. 199), 
a tar obtained in roasting the nuts, and largely used in India for 
tarring wood, contains about 90 per cent. of anacardic acid and 
19 per cent, of cardol. (Pharm. Journ. Oct. 3rd, 1891.) 
EEGUMINOS 2, 
A description of the preparation of Catechu or Cutch, 
The merchants of Nasik, Gangapur, and other towns engage the 
services of the Agtoris* for the purpose of manufacturing Catechu, 
Ti is usual with these merchants to descend into the Concan at the 
termination of the rains. They enter into an arrangement with 
several of the chief Naiks to proceed with them for the purpose of 
preparing the required quantity of Catechu. As the Katoris are 
generally in debt to the grain-dealers of the different villages, near 
which they reside, the traders adjust matters with the grain-dealers 
by paying part, and becoming responsible for the balance of the debt, 
on the return of the Katori to his old residence. The trader being 
joined by the Ka4toris, the latter select a spot where the Khair trees 
(Acacia Catechu) are numerous, The merchant then begins to erect 
an extensive shed, but as he has only one or two servants and three 
or four matchlock men with him, he employs the Katoris to build it. 
* siaigi or HlARU the name of a jungle tribe in Western India, whose 
principal be, feta is the collection of H[# or Catechu 
