124 Mr. G. P. Mudge. Intravascular Coagulation [Oct. 16, 



F.P. s= Fairly pronounced. The clot is axillary and continuous, but thin, and is absent 

 from the " thoracic postcaval " or portal vein, or from both. 



F. = Faint coagulation. The clot is a mere cotton-like thread, and is more or less 

 continuous and axillary, but is absent from the " thoracic postcaval " and portal 

 vein. 



V.F. = Very faint coagulation. The chief feature of this condition is in its limitation, for 

 the clot may be a mere cotton-like thread or fairly thick (nearly as thick as in P). 

 The clot is limited, however, to one or other of the two jugulars and associated 

 precavals, or is confined to any other one vein ; and small clots may or may not 

 be present in the chambers of the heart. 



A.B. = Coagulation almost absent. Only a few colourless clots of fibrin specks or fila- 

 ments are present in the ventricles of the heart, and usually attached to the chordae 

 tendinese. There are no clots of any kind in any of the veins. 



A.B'. = Like A.B., but the clot in the chambers of the heart is red (not colourless) and is 

 fairly large, varying from a tenth of an inch to a clot which fills the chamber. 



A. = Absence of coagulation absolute. 



The above definitions of conditions are based upon actually occurring states, and are not 

 therefore wholly arbitrary ; but in a few of the experiments it is difficult to assign the 

 observed state to any one of the above defined groups. Such instances are indicated in 

 the tables by the interrogative sign. 



No result = Means that as much of the solution that could be spared was injected, but 

 was not sufficient to kill the animal. It was then killed by an overdose of 

 chloroform. 



No P.M. exam. = A post-mortem examination was not made. In the few cases in which 

 the examination was omitted (owing to the lateness of the hour) the symptoms 

 were typically those of death by intravasculation coagulation. The object of 

 the experiment in these cases was not to ascertain the extent of coagulation, but 

 the amount of the minimum lethal dose. 



