134 BIOLOGICAL PHYSICS 



on human progress and happiness, we must disabuse 

 our minds of, and guard against, the great fallacies capable 

 of being perpetrated by the careless or unscientific use 

 of such terms as survival^ but not of the fittest, and reversion 

 to earlier, and, it may be, long since extinct types ; all 

 which represent only the continuous, contemporary, and 

 balanced working of the laws of involution and evolution 

 as the one great determining and operative law of progress , 

 in the world, inorganic, organic, and human. 



Human progress generally, as well as particularly, 

 although the outcome, to some extent, of what seems 

 to be free and independent individual, or communal, 

 human effort, is no exception to the universal incidence 

 of this law, a fact which all human history attests ; it, 

 therefore, behoves the votaries of whatever science, or 

 cult, which can in any way affect the rate of that human 

 progress, to put the methods and manners of that science, 

 or cult, so clearly and intelligibly into the possession of 

 their successors, as that it can be afterwards said, in 

 all truth, by these successors, " he that runneth may 

 read." 



Since the above was written regarding the carotid 

 glands, or bodies, it has been found that an affection 

 of the neck called the " potato-like tumour " takes its 

 origin from the carotid glands, one, or other, or both, 

 and that it has a course quite distinct from any other 

 known growth in these regions, and is possessed of a 

 structure endothelial in character, and just such as could 

 be evolved from occlusion of the excretory outlets of 

 the gland, or glands, with pathological accumulation and 

 formative arrangement of their resultant secretion and 

 tissue elements. We, therefore, feel warranted in claim- 

 ing this pathological discovery as a proof of the truth of 

 our physiological finding with regard to these much over- 

 looked bodies. 



