4 



Dr. J. S. Lombard. Conduction of Heat in [Jan. 7, 



Table IV. — Conduction of Heat through 10 mm. of the Cortical 

 Substance of Sheep's Kidney. 



Time. 



Percentages of heat transmitted. 



Averages. 



Maxima. 



Minima. 



6 „ 



Permanent thermal condition . . . 



44-512983 

 64 -946250 

 82 -431483 

 97 -715600 



53-013900 

 72 -318700 

 87 -027000 

 99 -500000 



27-725100 

 59 -696400 

 78 -138000 

 93-466600 



Table V. — Conduction of Heat through 10 mm. of the Medullary 

 Substance of Sheep's Kidney. 



Time. 



Percentages of heat transmitted. 



Averages. 



Maxima. 



Minima. 



» 6 >, 



9 „ 



Permanent thermal condition . . . 



36 -541850 

 56-686350 

 71 536316 

 91 -947716 



46-86L700 

 69 -645700 

 87-121000 

 98 -676300 



19-867800 

 39-955000 

 53 • 310900 

 78 -150400 



Both cortical and medullary substances behave like liver as regards 

 the diminution of conductivity after death, and the effect of water 

 and fresh animal matter on this loss. 



Experiments on Bone. 



The observations were made on the tibia and the ilium of the sheep. 

 The experiments were divided into three classes, according as the tissue 

 was compact, spongy or combined compact-spongy. Some 200 experi- 

 ments were made, which were divided about equally between the three 

 varieties of tissue. 



Tables VI, VII, and VIII give the results of these experiments. 

 According to the tables, spongy tissue stands first in average, maxi- 

 mum, and minimum conductivity, at every period, and the combined 

 compact-spongy tissue comes next, also as regards all three valuations 

 and every period of time. 



