EN v t)OSKELETOK. ANIMALS. 27 



A. 101. A longitudinal section of the ulna, probably from the 

 same animal as the preceding. 0. C. 194. Hunterian. 



A. 102. A longitudinal section of a metacarpal bone, in which 

 an external layer of uncoloured bone may be observed, 

 as in A. 100, being probably part of the same animal. 

 U. 0. 195. Ifiuderian. 



A. 103. The os innominatuin, in which a very slight tinge 

 remains. 0. C. 196. Hunterian. 



A. 104. A longitudinal section of the femur of the same Hog as 

 A. 100. 



In this preparation may be observed a very thin layer of 

 uncoloured bone deposited on the exterior of the shaft after 

 the madder was remitted, and also some of the original 

 uncoloured bone which had not been absorbed from the 

 interior of the shaft when the animal was killed. 0. C. 197. 



Hunterian. 



A. 105. A longitudinal section of the femur of an older Hog, in 

 which the layers of bone deposited before, during, and after 

 the ad ministration of madder are more distinctly observable. 

 0. C. 198. 



[This preparation is figured in au original drawing by Wm. 

 Bell, Mr. Hunter's Assistant.] 



Hunterian. 



A. 106. A longitudinal section of the femur of an older Hog, in 

 which the coloured bone, deposited while the animal was 

 under the influence of the madder, may be observed in some 

 places to have reached the medullary cavity ; the whole 

 of the originally exterior uncoloured bone having been 

 entirely absorbed at those parts. 0. C. 199. Hunterian. 



A. 107. A longitudinal section of the tibia of the same Hog as 

 A. 100. It exhibits the same circumstances as are described 

 in A. 100 and A. 104. 0. C. 200. Hunterian. 



