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PEOCEEDINGS 



AMERICAlNr PHILOSOPHICAL SOCIETY, 



HELD AT PniLADELPllIA, FOR PROMOTlNfi USEFUL KNOWLEDGE. 



Vol. XXX, December. 1802. No. 139. 



TABLE OF CONTENTS. 



PAGE 



On the Mutual Relations between the Orbits of Certain Asteroids. 



By Daniel Kirkwood 269 



Further Notes on the Betoya Dialects ; from Unpublished Sources. 



By Daniel G. Brinton, M.D., LL.D 271 



On the Phylogeny of the Vertebrata (with two cuts). By Prof. 



E. D. Cope 278 



On Some Points in the Kinetogenesis of the Limbs of Vertebrates. 



By Prof. E. D. Cope 282 



On False Elbow Joints (with two plates). By Prof. E. D. Cope. 285 



Stated Meeting, September 2, 1S92 291 



Stated Meeting, September 16, 1S92 300 



Stated Meeting, October 7, 1892 303 



Stated Meeting, November 4, 1892 307 



Stated Meeting, November IS, 1892 309 



Stated Meeting, Decembe r 2, 1892 312 



Stated Meeting, December 16, 1892 313 



The Etrusco-Libyan Elements in- the Song of the Arval Brethren. 



By Daniel O. Brinton, M.D., LL.D 317 



5^" It is requested that the receipt of this number be acknowledged. 



11^" In order to secure prompt attention it is requested that all corre- 

 spondence be addressed simply " To the Secretaries of the American 

 Philosophical Society, 104 S. Fifth St., Philadelphia." 



Published for the American Philosophical Society 



BY 



MacCALLA &. COMPANY, 



NOS. 237-9 DOCK STREET. PHILADELPHIA. 



