H^emajlatta. 1 45 
arc of a more elaftic concradive Nature, Co 
that the Water, not being like the Blood full 
of Globules, it cannot keep thofe Vcffels open^ 
as the Blood does by an uninterrupted Series of 
Globules following each other 5 and the great- 
er Proportion the Qtiantity of thefe Globules 
bear to the more diluted part of the Bloody 
the lefs Quantity of Fluid will be fecerned front 
the Arteries and Verja, And hence it 
is that it is found fo difficult to injed with Ver- 
milion or other coloured Liquors, the imme- 
diate Communications between the Arteries 
and Veins, in purfuit of which I made fome 
few Attempts, viz* 
Experiment XXL 
I. I was fenfible that anatomicalln*^ 
JL jedions have of late Years been car- 
ried to a good Degree of Perfedion by feve^ 
ral skilful Anatomifts ; yet as they both pre- 
I pared their Veffels by injeding Water into 
I them with a Syringe, and alfo injeded their 
rii melted coloured Liquors by a Syringe j in ufing 
of which Inftrument, one cannot be affured^ 
with what Force either the Water or melted Li- 
j quor is impelled, fo as to be fecure from breaking 
[ the finer Veffels, or from making Blotches by 
L too 
