Progress of Rational Pathology. 229 



first converted into cellular tissue, in which there is then 

 deposited in streaks, an oily, at first yellow, but at a later 

 period white substance, which unites the extremities of the 

 nervous fibres, while it proceeds from either end. If no union 

 takes place, the ends of the nerves grow thin, become tran- 

 sparent, and adhere by means of fine cellular tissue to the 

 neighbouring parts : the primitive fibres lose their contents, 

 and the sheathes continue in the form of thin weak fibres. Ac- 

 cording to Nasse, the newly formed nervous fibres are rather 

 narrower than the original ones. The shortest time in which 

 sensibility has been restored along the course of a divided nerve, 

 was 8 weeks, according to Giinther and Schon. It is remark- 

 able that only nerves of the same class unite again (Bidder). 

 The newly formed nervous fibres are longer in being able to 

 respond to the influence of the will, than to mechanical or 

 galvanic irritation. 



i. Alimentary canal. — After the use of tartar emetic, Marion 

 de Proce has observed a pustular eruption, not only in the 

 lower part of the sesophagus (like Rokitansky,) but also 

 in the pharynx and throat, with the mucous coats of the 

 stomach and small intestines in places reddened and injected. 

 Hodgkin regards as a sign of fresh acute inflammation 

 of the mucous membrane of the stomach after poisoning, 

 a number of scattered small, almost opaque, whitish spots 

 deeply seated in the mucous coat. Briquet and Cruveil- 

 hier describe a chronic inflammation of the follicles of the 

 stomach and intestines : the mucous membrane was other- 

 wise normal, but studded with small swellings (from a few 

 lines in diameter to the size of a pin,) which in some places 

 were flat, lens-shaped, and white, in others had pedicles, were 

 egg-shaped, reddish, or violet-coloured, without any opening, 

 but filled with a thick mucous fluid : no doubt this was a fung- 

 ous alteration. As to the perforating ulcer of the stomach, 

 which, according to Rokitansky, occurs more frequently than 

 is commonly supposed, Dahlerup disagrees with him in many 



