114 THE CELL DOCTRINE. 



ished, or perverted; and many pathological states are 

 rationally explained by bearing in mind the proper- 

 ties of germinal matter and the very minute size which 

 the living particles may exhibit. All physical diffi- 

 culties in the way of the passage of white blood cor- 

 puscles through the walls of capillaries are removed, 

 when we remember that the smallest living particles 

 by the rapid growth of which white blood discs or pus 

 corpuscles are speedily produced, do not exceed the 

 TTJ (Hjui> f an i ncn * n diameter, and that however un- 

 reasonable it may appear for a body 3^00 of an inch 

 in diameter to migrate through continuous capillary 

 walls, it becomes much less unreasonable when we 

 thus reduce its proportions. The observations of 

 Beale would also seem to reconcile the discordant 

 views with regard to the so-called exudations, in 

 which on the one hand we need not suppose an ex- 

 cessive dislocation of structure to admit the passage 

 of large cells, and on the other are not compelled to 

 restrict the origin of those cells to points outside 

 the vessels. We have already expressed that the 

 views of H. Charlton Bastian and Cornil, with regard 

 to the origin of tubercle in the perivascular sheaths 

 of vessels, are not practically different from those 

 earlier expressed by Beale as to its origin in the 

 germinal matter of the walls of bloodvessels. 



It will be noted that the only points of difference 

 between our own and the views of Dr. Beale, lie in 

 the structure of the germinal matter, and the use of 

 the word dead to characterize formed material. In 

 all other respects, we accept the theory of Beale, 

 and have no hesitation in saying that it admits, with- 



