pa^^ARAT10)r or OX-OALL. •:< 155 



It is also of great use to HouseVeepers, Sailors, and others, and for ckaa- 

 fO'clean woollen clotiies from ojrease, tar, &c.; and will be " 

 foyndiftdy^antai^eoos for many other purposes. 



If It sihould meet with the approbation of the Society, I 

 have no objection to prepare it for sale. 

 • - - I am. Sir, 



Your obedie.it Servant, 



RICBARD CATHERY, 



BotanvcalrColourer. 



l^rf)*;&SS, for preparing Ox-Gall in a concentrated ^tate, jbi^ 



. , ^ . ,; : (.,„,.,,, bi/ Mr, Cathery. 



I'alce a gatt fres,li from the ox, and put it into a basin, let Methodofpre- 



it stand all night to settle, then pour it off from the sediment P*""B "v 



ii^^p a clean earthen mug, and set it :n a saucepan of boiling 



Water, over the fire, taking care that none of the water gers 



ievto the mug. Let it boil till it is quite thick, then take it 



<)ut and spread it on a plate or dish, and set it before the fire 



to evaporate; and when as dry as you can get it, put it into 



small pots, and tie papers over their tops to keep the dust 



^ from it, and it will be good for years*. 



Certificates were received from Mr. Gabriel Bayfield, No. Testimonies of 



9;Paik Place, Walworth; and Mr. William Edwards, No. ''^ "««f"ln«« 

 ' ' . ' ■• . to artists, * 



0,^ Poplar Row;, both botanical colourers ; stating, that 



taey n^ve used the ox-gall prepared by Mr. Cathery, and 



fin<^it to answer belter than gall in S liquid state; that this 



preparation is free from disagreeable smell, and is much 



cheaper, as one oj<-gall thus prepared will last one person for 



two yeqrs, and, be as fresh as if just taken from the ox. 



A Certificate was received from Mr. James Stewart, No. and at sea. 



26! ^t. Martin's. Street, Leicester Square, stating, that he 



lately t)elonged to his Majesty's ship the Vestal frigate, and 



that .he took out with him, in a voyage to Newfoundland, 



a l^r'ge pot of the prepared px-gall, for the purpose of wash- 



ingJhis g^easry clothes, for two years; that he found it very 



i ^jg||HiQ(^lej,,.aJi(i tp-keepiitpyirtue as well as the first day. 



'•*'6an%iriil keep sfymetlme, if merely boiled so as to separate the -»lbu- 

 minous part, agreeably to the directions of Mr. J. Clark, or professor 

 Proust. See Journal, vol. XVII, p. 341. C. 



XVIII. 



