IV 
CONTENTS. 
NO. PAGE 
XXXY. The Development of the Auditory Ossicles in the Horse, 
with a Note on their possible Homologues in the 
Lower Vertebrata. By Ray F. Coyle, B.S. (From the 
Zoological Department of the University of Edinburgh.) 
(Communicated by Professor J. C. Ewart, M.D., F.R.S.) 
(With Six Plates), ...... 582 
(Issued separately September 9, 1909.) 
XXXVI. Dr 0. Pettersson’s Observations on Deep Water Oscilla- 
tions. By E. M. Wedderburn, W.S. (With a Plate), . 602 
( Issued separately August 14, 1909.) 
XXXVII. Mendelian Action on Differentiated Sex. By D. Berry 
Hart, M.D., F.R.C.P.E., Lecturer on Midwifery, Surgeons’ 
Hall, Edinburgh ; Carnegie Research Fellow. (From the 
Laboratory of the Royal College of Physicians), . . 607 
(. Issued separately 1909.) 
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