408 Mr. F. Gal ton's Experiments in Pangenesis. [Mar. 30, 



it was whipped up by the whisk F ; then poured into C, which consists of a 

 short funnel with muslin below, resting in the top of a glass measure ; 

 when the blood had strained through, the funnel and muslin were set on 

 the top of D, to get them out of the way and, at the same time, to keep 

 them warm for future use ; B is the thermometer ; E is a spill-case full of 

 water to contain the syringe. In addition to these, I required a large slop- 

 pail, a jug of hot, and another of cold water. 



The sketch shows my latest outfit of basins and warm water for inject- 

 ing. It was not perfected until I had nearly finished the experiments. 

 Scrupulous cleanliness is requisite, and great orderliness ; for the hazard 

 lies, not in the performance of one difficult operation, but in making a 

 mistake in some one of a great many easy operations. The course of an 

 operation was as follows: — (1) secure the animal, (2) remove fur from 

 neck, (3) anaesthetics, (4) expose jugular, (5) cut a slit in it and let 

 the animal bleed as much as he can easily bear, about six drachms, 

 (6) stop the flow with gentle pressure by spring forceps ; the animal 

 was then left for a minute while (J) Dr. Murie and Mr. Fraser divided the 

 throat of the supply-rabbit, I catching the blood in a warmed basin and 

 whipping it up, to defibrinize it, as it fell. I continued doing this while Dr. 

 Murie was (8) inserting the canula ; and when he was nearly ready he 

 called to me, and I (9) filtered the blood, noting its amount, as a guide to 

 what I had to dispose of, (10) drew up a syringe full, (11) injected a con- 

 venient number of drachms or half drachms, indicated by the graduations 

 on the syringe-handle, (12) returned the overplus to the glass of supply- 

 blood, (13) cleansed syringe and injected water, (14) let the rabbit bleed 

 three or four drachms, — and then recommenced the series. I have not re- 

 inserted in this description before (11) and (13) what I previously described 

 about turning the stopcock &c. ; nor have I spoken of the continual jotting 

 down of notes in my case-book. 



