D wight.] 



80 



[January 4, 



the two legs turned on its long axis so that the posterior surface is in 

 front. From each of its two inferior terminations arises a toe (&) 

 consisting of four phalanges, the right one being a trifle the longer, 

 and each with the plantar side above. 

 These, therefore, are the fourth digits 

 of different feet. Although the muscu- 

 lar fibres ceased at the upper end of 

 the bone, tendons were continued down 

 the limb, and the flexor tendons going 

 to the last phalanges were very dis- 

 tinct; on the dorsal aspect the arrange- 

 ment was not so clear. As these ten- 

 dons were more or less united to the 

 periosteum of the long bone (a), the 

 muscle can have had little action ex- 

 cept to raise the whole limb at once. 

 There were several good- sized blood 

 vessels, and the whole limb had the 

 appearance of a much higher degree of 

 organization than that of the other 

 specimen. These are examples of what 

 Vrolik calls inferior lateral duplicity. 



As anomalies of this class are by no 

 means fully understood, and as it is 

 very rare to find two cases which re- 

 semble one another, I have thought it 

 more for the good of science to describe 

 the appearances accurately than to in- 

 dulge in speculations which, in the present state of knowledge, must 

 rest on imperfect data. 



Fig. 3. 



Some Interesting Phenomena Observed in Quarrying. 

 By W. H. Niles. 



In working a quarry at Monson, Mass., some phenomena have been 

 observed, which I trust will prove to be of scientific interest. For a 

 few years, Mr. W. N. Flynt, proprietor of the quarry, and his fore- 

 men, have observed spontaneous fractures, movements and expan- 

 sions of the rock. Mr. Flynt called the attention of some persons 

 interested in science to these phenomena, yet no one made them a 



