OP NERVES TO THE CAPILLARIES OF BAT*S WING. 313 



the minute arteries may be frequently followed from 

 these to the capillary vessels. 



4. In the case of the striped muscles of the 

 chameleon's tongue, I have succeeded in following a 

 fine fibre from the so-called nerve tuft to the neigh- 

 bouring capillary vessels. 



5. In the muscular coat of the frog's bladder, in 

 that of the oviduct, and in the muscular coat of the 

 small intestine, the fine nerves form an intricate in- 

 terlacement, some fibres of which are distributed to 

 the muscles, while others ramify upon the little 

 arteries, veins, and capillaries. 



These nerve-fibres distributed to the finest capil- 

 laries of many tissues have therefore been traced 

 from ganglia, from sensitive and motor nerve trunks, 

 from the peripheral ramifications both of sensitive and 

 motor nerves, and they are intimately related to the 

 ultimate ramifications of some of the nerves of special 



These anatomical facts suggest many considerations 

 bearing upon the mode of action of the peripheral 

 portion of nerve-fibres, but the subject is too exten- 

 sive to discuss in this place* It may form the subject 

 of a separate memoir. 



3O9. Recent observations on the distribution of 

 nerves to the capillaries of the bat's wins?- More 

 recent observations on the capillaries of the bat's 

 wing have, however, convinced me that nerves distri- 

 buted to the capillaries of mammalia, follow the same 

 general arrangement as those traced to the capillary 

 vessels of batrachia. 



The nerves to the capillaries of the bat's wing are 

 very sharp and defined in successful preparations, but 

 in many specimens not a trace of them is to be dis- 

 covered. The slightest alteration in the medium in 

 which the examination is made, causes these delicate 

 fibres to become indistinct, and unless the specimen 

 be exceedingly thin they cannot be seen at all. 



u 



