654 ANNUAL REGISTER, 1810. 



it with very little expence, which 

 will be to those who use gall, a 

 great saving, as it will prevent 

 it from putrefying, or breeding 

 maggots. 



One gall prepared in my me- 

 thod will serve an artist a long 

 time, as it will keep a great num- 

 ber of years. It will be a conve- 

 nient article for use, as a small 

 cup of it may be placed in the 

 same box which contains other 

 colours, where it will be always 

 ready. The qualities of gall are 

 well known to artists in water-co- 

 lours, particularly to those who 

 colour prints, as many colours will 

 not, without gall, work free on 

 such paper, on account of the oil 

 that is used in the printing ink. 



The artists who make drawings 

 in water-colours also use gall in 

 the water which they mix their 

 colour with, as it clears away that 

 greasiness which arises from moist 

 hands upon paper, and makes the 

 colour to work clear and bright. 

 My preparation is ready for use in 

 a few minutes ; all that is neces- 

 sary being to dissolve about the 

 size of a pea of it in a table- 

 spoonful of water. 



It is also of great use to house- 

 keepers, sailors, and others, to 

 clean woollen clothes from grease, 

 tar, &c. and will be found advan- 

 tageous for many other purposes. 

 If it should meet with the ap- 

 probation of the Society, I have 

 no objection to prepare it for sale. 

 I am, Sir, 

 your obedient servant, 

 Richard Cathery, 

 Botanical Colourer. 

 ToC. Taylor, M.D. Sec. 



Process for Preparing Ox-gatl in 

 a Concentrated Slate, by Mr. 

 Cathery. 



Take a gall, fresh from the ox, 

 and put it in a bason ; let it stand 

 all night to settle, then pour it off 

 from the sediment into a clean 

 earthen mug, and set it in a sauce- 

 pan of boiling water over the fire, 

 taking care that none of the water 

 gets into the mug. Let it boil till 

 it is quite thick, then take it out 

 and spread it on a plate or dish, 

 and set it before the fire to evapo- 

 rate ; 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. 9 Park- 

 place, Walworth, and Mr. Wil- 

 liam Edwards, No. 9 Poplar-row, 

 both botanical colourers, stating 

 that they have used the ox-gall 

 prepared by Mr. Cathery, and 

 find it to answer better than gall 

 in a liquid state ; that this pre- 

 paration is free from disagreeable 

 smell, and is much cheaper, as 

 one ox-gall thus prepared will last 

 one person for two years, and be as 

 fresh as if just taken from the ox. 



A certificate was received from 

 Mr. James Stewart, No. 26 St. 

 Martin's-street, Leicester-square, 

 stating that he lately belonged to 

 his Majesty's ship the Vestal fri- 

 gate, and that he took out with 

 him, in a voyage to Newfoundland, 

 a large pot of the prepared ox- 

 gall, for the purpose of washing 

 his greasy clothes for two years ; 

 that he found it very serviceable, 

 and to keep its virtue as well as 

 the first day. 



