Dwight.] 



76 [January 4, 



glionic commissure at that point. He had seen a drawing of 

 the same muscle (numbered 18) in another species of larva 

 in a paper by Lubbock. 



January 4, 1871. 

 The President in the chair. Thirty-six persons present. 



John P. Payson of Chelsea, John D. Billings of Jamaica 

 Plain, G. Brown Good of Cambridge, Charles M. Sumner, 

 M. D., Samuel Henshaw, John S. White, John Prince 

 Knight, S. Gardner Lewis, Edward Wigglesworth, Jr., M. D., 

 and Thomas C. Chandler of Boston, were elected Resident 

 Members. 



Mr. Henry E. Dresser of London, Josiah Curtis, M. D., of 

 Knoxville, Tenn., and Thomas F, Perley of Bridgeton, Me., 

 were elected Corresponding Members. 



The following paper was presented:-^ 



Ox Two Fowls with Supernumerary Legs. 

 By Thomas Dwight, Jr., M. D. 



Two specimens of three-legged fowls were received by the Society 

 on December 28th, 1870, and on January 2d, 1871, respectively. 

 Each bad a third misshapen leg, which did not reach the ground, 

 suspended between the other two; but the anatomy of the malforma- 

 tion was entirely different in the two specimens. 



The one first received (Catalogue, No. 1208) was loaded with fat. 

 The third leg was suspended by a rounded mass of fat, in the 

 median line below the highest caudal vertebra, and contained no 

 bone for the first inch. A rudimentary ligament (the upper end 

 of which was perhaps slightly muscular) descended from the 

 ischial spine of either side, each to be inserted into one of the 

 two spines by which the limb began. Otherwise the pedicle was 



