98 THE CELL DOCTRINE. 



cisely analogous to those represented as giving sup- 

 port to the view, that tubercle originates in the 

 perivascular sheaths of bloodvessels ? The views of 

 Beale, H. Charlton Bastian * and Cornil,t would 

 then constitute simply different modes of expression 

 of the same truths. 



KOBiN,:]: 1867. 



Eobin, who may be considered the mouthpiece of 

 the French school of histologists, reduces the human 

 body to elementary parts, usually microscopic, which 

 he calls anatomical elements. The forms he makes 

 threefold,— ^^fo'fis, tubes, and cells. 



The fibres are generally of considerable length, 

 sometimes extending from the lower part of the 

 spinal cord to the extremity of the foot. Their di- 

 ameter is, however, small, often not exceeding .001 

 millimeter, or .00003987 of an inch. 



The tubes offer as objects of study the walls and 

 the cavity. 



* Bastian, H. 0., Tubero. Meningitis, Edinb. Med Jour., 1867, 

 p. 875. 



f Cornil, Tubercle in Connection with the Vessels, Arcbiv. de 

 Phys. Norm, et Path., Jan. et Fev., 1868. 



J Our information with regard to M. Eobin's views, is derived 

 from an admirable exposition of them published in vol. iv, 1867, 

 of the New York Medical Journal, by Dr. "William T. Lusk, who 

 there states that he has them mainly from a course of familiar 

 and private instruction, furnished to him by M. C. H. Georges 

 Pouchet, assistant to M. Robin, Lecturer upon Anatomy and His- 

 tology to the Ecolo Pratique, author of " Un Precis d'Histologie,'' 

 etc., and son of the eminent physiologist. Prof. F. A. Pouchet ; so 

 that they may be said to be the views also of the elder Pouchet. 



