EXPF.llIMKNT WITH LYMPH OF FOURTH REMOVE. 127 



when distinct, are therefore to be preferred. It has 

 elsewhere been stated, that the early-formed ichor is the 

 most pm-e, being limpid, transparent, and viscid. 



Ha\ing spoken in a former part of this treatise, of 

 the liabihty of primary lymph to cause sloughing in the 

 ovinated places, we will here insert an experiment with 

 some lymph of the fourth remove, which was attended 

 with only slight ulceration. 



Nov. 29. — Patient a two-years-old Dorset sheep, 

 ovinated inside each thigh with lymph forwarded by 

 IVIr. Ceely, who in his communication says, " Yesterday 

 I had an opportunity of charging some tubes and points 

 from a sheep inoculated from the lamb you saw when 

 here ; I have therefore sent you some ichor : it is the 

 fourth remove. I charged the points twice from a vesicle 

 the size of a fourpenny piece, adjoining, nay in fact 

 continuous with, the inoculated vesicle. The fluid was 

 as limpid as any I have ever been able to obtain, and I 

 might have charged many more points and tubes than- 

 I did." 



Dec. 1.— Third day of ovination. A small spot of 

 variolous inflammation has appeared on the site of each 

 incision. 



Dec. 3. — The inflammation has gradually spread 

 since the 1st. (See third, fourth andffih days of ino- 

 culation, Plate 5.) 



Df^c. 4. — Roseola and scattered stigmata are to be 

 seen on the insides of the arms and thighs. The animal 

 has shght fever, and loathes its food. 



j)cc. 5. — The condition of the integument is about 

 the same. The ovinated places are umbilicated, and 

 their redness is diminished. 



