284 Mr. Ray to Dr. Robinfbn . 



on be changed into the Colour * of the arterial ? To 

 which I fhall add a Queftion more, viz. Whether in 

 the Chicken before exclufion there be any Foramen 

 ovale , or arterial Chanel for the Paflage of the Blood, 

 while the Lungs lie vacant. 



Dr. Robinfoirt Anfwer to Mr. Ray; 



S 1 JRy London^ Decemb. zo — -94. 



SO M E of your Queries I can Anfwer, as that re- 

 lating to the Blood of a Hedge-hog^ which I found 

 to be warm to the touch when I was at Mr. Cium 

 terbuck's in Effex ; where I was particularly curious 

 to examine that particular, but I would not be quo- 

 ted againft Dr. Lifter , left he fhpuld take it ill. 



I never obferv'd the arterial Blood of a Fifth , to be 

 as florid *as that o£ Quadrupeds. 



I do not think that the venal Blood of Animals 

 can by any artificial compreflion, or conftri£Hon, be 

 changed into the Colour of the Arterial > I am fure 

 that the Air immediately changes its colour and con- 

 fidence upon Phlebotomy, 



I cannot Anfwer that of the Chicken before ex- 

 clufion, I wonder jiquapendenfe^Harvey^ Malpighi and 

 others have not elear/d it. 



Upon reading Dr. Lifter's Aflertion of the Blood of 

 the Hedge- hog being cold^ I tried the Experiment ef- 

 fe£tually with a nice Thermometer ^ upon Mar. im 

 1 71 J. and found not only that Hedge-hogs (for I made 

 ufe of more than one) are warm, like other Animals, 

 but that their Blood running from an Artery upon 

 the Thermometer^ raifed the Spirits therein confidera- 

 bly, as it doth when the Blood of other Animals is, 

 in the fame Quantity, emitted from an Artery on the 

 Thermometer. . IV. B* 



Mr. 



