C 40i 3 
flacle exifts, the colouring Facula is detained and 
depofited there. When the offifying Juice is no 
longer neceffary for repairing a daily Lofs of Sub- 
ilance, as in Animals arrived at their full Growth ; 
befides that probably this Juice is then much lefs 
abundant, and confequently, in proportion, lefs 
charged with the colouring Parts of the Root ; it 
muft neceflarily refult thence, that the Bones of an 
adult Animal will be much weaker coloured. And 
this is what happened to my Two Turkeys, which, 
though fed for Fifteen Days with the Pafte of Meal 
and Madder^ had their Bones tinged but of a Rofe 
Colour, which appeared to me fomewhat deeper 
towards the Ends than the Middle, which, having too 
much Confiftence, could not admit or retain the fame 
Quantity of the colouring Facula as the tender 
Bones of the young Pigeons. Therefore the Bones 
of Animals that are ftill growing, are dyed better and 
quicker than thofe of full-grown Animals ; and, in 
my Opinion, for the Reafons already given. My 
Two Turkeys had the fame Ailments with the Pullets 
of the Firft Experiment, they fell into a Decay like 
thofe, and I was obliged to have them killed in 
Fifteen Days time. 
Here we fee young Pigeons, whofe Bones were 
dyed of a fine Carmine-red in three Days; which 
is nearly the Time they muft have for acquiring this 
Degree of Tindure. By other Experiments on young 
Pigeons of the fame Age, I have found, that in Thirty- 
fix Hours their Bones were of a lively Rofe-colour, and 
in Twenty-four Hours they were at leaft of a Flefh- 
colour. 
Thcfc 
