316 



FANNELS FOR PAlNtERS. 



IX. 



Method of preparing Pannehfor Painters. By Mr. S . G R A N r> i *, 



T 



Composition jj^ AKE the bones of sheep s trotters, break them grossly, 

 for grounding i i_ •■, i • -i i j r o j 



panncls It is ^"'^ Doil them ni water until cleared trom 



the 



grease. 



the 



made of cal- 

 cined bones 

 and wheat 

 flour. 



Application. 



Canvas 

 grounds. 



put them into a crucible, calcine them, and afterwards grind 

 tliera to powder. Take some wheaten flour, put it in a pan 

 over a slow fire until it is dry, then make it into a thin paste, 

 add an equal quantity of the powdered bone-a^h, and grind 

 the wliole mass well together: this mixture forms the ground 

 for the pannel. 



The pannel having been previously pumiced, some of tho 

 mixture above-mentioned is rubbed well thereon with a pumice- 

 stone, to: incorporate it with the pannel. Another coat of the 

 composition is then applied with a brush upon the pannel, 

 and suffered to dry, and the surface afterwards rubbed over 

 with sand-paper. 



A thin coat of the composition is then applied with a brush, 

 and if a coloured ground is wanted, one or two coats of the 

 colour is added, so as to complete the absorbent ground. 



When it is necessary to paint upon a pannel thus prepared, 

 it must be rubbed over with a coat of raw linseed or poppy- 

 oil, as drying oil would destroy the absorbent quality of the 

 ground; and the painter's colours should be mixed up Avith 

 the purified oil hereafter mentioned. 



Canvass grounds are prepared, by giving them a thin coat 

 of the composition, afterwards drying and pumicing them, 

 then giving them a second coat, and, lastly, a coat of colour- 

 ing matter along with the composition. 



The grounds thus prepared do not cr^k ; they may be 

 painted upon a very short time after being laid, and from 

 their absorbent quality, allow the business to be proceeded 

 upon with greater facility and better effect than with those 

 prepared in the usual mode. 



Method 



* The processes of Mr. Ciandi being founded upon practice, were 

 supported to the Society of Arts, by certificates fiom our most eminent 

 painters ; in consequence of which, and of the exhibition of the Paa- 

 aels, the Society awarded him the Silver Medal and 20 guineas. 



