[ 53 ] 
I afk pardon of your Lordfhip and the Society 
for taking up fo much time as this paper hath re- 
quired : but if it meets with your Lordfhip’s and the 
Society’s approbation, I may, in fome future paper 
(when the neceffary avocations of my profeffion will 
allow me leifure), lay before you fome experiments, 
relating to colours which are not likely to change by 
being painted on any kind of ground. 
As your Lordfhip’s recommendation contributed 
much to make me a member of this learned body, 
I muft beg your patronage of this communication ; 
and am, with the greated refpedt. 
Your Lordfhip’s and the Society's 
Mod: obedient humble Servant, 
Budge-row, 
February 27, 1 759. 
Jofiah Colebrooke. 
IX. A Letter concerning the fuccefs of the 
precedmg Experiments. In a Letter to the 
Right Ho 72 ourahle Lord Charles Caven- 
dilh, V \ P. R. S. fro?n Mr. Jofiah Cole- 
brooke, F. R . S. 
My Lord, 
Read April 5. TTN a paper (I lately had the honour to 
X % before the Royal Society, on the 
encaudic painting of the ancients) I mentioned an. 
ufe which might be made of it to preferve dra wings. 
I have now the pleafure of laying before your Lord- 
