TRANSACTIONS 



OF THE 



OYAL SOCIETY OF EDINBURGH. 



VOL. XXXIX. PART III.— FOR THE SESSION 1898-99. 





CONTENTS. 



Page 





VII. On the Further Anatomy and the Budding Processes of Cephalodiscus dodecalophus 

 (M'Intosh). By Arthur T. Masterman, B.A., D.Sc, F.R.S.E., Lecturer and 

 Research Fellow in the University of St Andrews. (With Five Plates), . . 507 



(Issued separately, 10th December 1898.) 



Jill. On Steam and Brines. By J. Y. Buchanan, F.R.S., .... 529 



(Issued separately, 3lst December 1898.) 



[IX. On a Silurian Scorpion and some additional Eurypterid Remains from the Pentland 



Hills. By Malcolm Laurie, B.A, D.Sc. (Plates I.-V.), . . .575 



(Issued separately, 1st February 1899.) 



*vX. Un a New Species of Cephalaspis, discovered by the Geological Survey of Scotland, in 

 the Old Red Sandstone of Oban. By Ramsay H. Traquair, M.D., LL.D., F.R.S., 

 Keeper of the Natural History Collections in the Museum of Science and Art, Edin- 

 burgh. (With a Plate), . . . . . . . .591 



(Issued separately, &h February 1899.) 



XI. On Thelodus Pagei, Powrie, Sp. from the Old Red Sandstone of Forfarshire. By 

 Ramsay H. Traquair, M.D., LL.D., F.R.S., Keeper of the Natural History Collec- 

 tions in the Museum of Science and Art, Edinburgh. (With a Plate), . . 595 

 (Issued separately, 1th February 1899.) 



X II. The Emblem of the Grab In Relation to the sign Cancer. By D'Arcy Wentworth 



Thompson, C.B., .....•••• 603 

 (Issued separately, 1th February 1899.) 



[Continued on Second Page. 



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