/ i ) 'i / / 



PREFACE. 



The following paper^ written by ;Mr. Edward DegeNj and 

 read before the inaugural meeting of the Club on the 5tli of 

 October^ 1892, is now presented to the Members as the 

 second volume of the ' Bulletin/ 



In order that the value of this important contributiou 

 should not be impaired owing to the author's absence in 

 Melbourne, I have invoked the assistance of Mr. W, P. 

 P^'craft, who is engaged on researches of the same class of 

 subjects and who has kindly edited the paper. The expenses 

 of publishing this volume have^ on Dr. Sclater's suggestion, 

 been most liberally defrayed by Mr. J. P. Gassiot, F.Z.S. 



R. BOAVDLEE SHARPE, 



Editor. 



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