1886.] Muscle, Liver, Kidney, Bone, and Brain. 3 



centages — average, maximum, and minimum — at every period. The 

 average percentages of superiority of parallel conduction over conduc- 

 tion at right angles are as follows : — 



Permanent 



At the end of At the end of At the end of thermal 



4 minutes. 6 minutes. 9 minutes. condition. 



6-947214 .... 10-51445 .... 8 '600991 .... 6-115203 



The conductivity of muscle, unlike that of the other tissues 

 examined, does not appear to depend, at least in any marked manner, 

 upon the degree of freshness of the tissue. So long as the muscle is 

 kept in a moist state, it seems to conduct equally well whether 

 recently removed from the auimal or after decay has commenced ; 

 and when the conductivity has been decidedly lowered by exposure 

 to the air, it generally can be partially, and sometimes completely, 

 restored, by moistening the tissue with water or fresh animal juices. 



Experiments on Liver.. 



The liver examined was that of the sheep. Table III gives the 

 results of sixty experiments on this organ. 



Table III. — Conduction of Heat through 10 mm. of Sheep's Liver. 



Time. 



Percentages of heat transmitted. 



Averages. 



Maxima. 



Minima. 



6 ,, 



9 „ 



Permanent thermal condition . . . 



45 -628640 

 64 -338080 

 81 -164906 

 93 -043060 



61-618700 

 79-448900 

 93 • 171900 

 99 -500000 



- 27-367800 

 48 -352500 

 64 -3 C 3800 

 78 -004000 



The conductivity of liver diminishes steadily and rapidly after 

 death, and is not restored by moisture or fresh animal matter, 

 although these latter seem to reduce the rate of loss. 



Experiments on Kidney. 



The observations were made on sheep's kidney. Tables TV and \ r 

 give respectively the results of thirty experiments on the cortical 

 substance, and of an equal number on the medullary tissue. 



The tables show that at every period of the observations, excepting 

 the maximum for the ninth minute, which gives a slight balance in 

 favour of the medullary tissue — the cortical tissue is the better con- 

 ductor. 



e 2 



