CONTENTS (continued). 



May 19, 1892. 



PAGB 



I. On Nora Aurigse. By William Httggins, D.C.L., LL.D., F.R.S., and 



Mrs. Htjgglns. [Plate 4.] . . 486 



II. On the Changes produced by Magnetisation in the Length of Iron and 

 other Wires carrying Currents. By Shelfobd Bid well, M.A., LL.B., 

 F.R.S. -.. . . . . 495 



III. On the Measurement of the Magnetic Properties of Iron. By Thomas 



Geay, B.Sc., F.R.S.E 503 



IV. On the Development of the Stigmata in Ascidians. By Waltee 



•GrAESTANG, M.A., Jesus College, Oxford, Berkeley Fellow of the 

 Owens College, Manchester . . . . . . . 505 



V. Observations on the Post-Embryonic Development of Ciona intestinalis 



and' Clavelina lepadiformis. By Aethttb Willey, B.Sc. Lond. . 513 



VI. The Human Sacrum. By A. M. Pateesoit, M.D., Professor of Anatomy 



in University College, Dundee, St. Andrew's University . . . 520 



List of Presents 525 



Obituary Notice : — 



Philip Heney Caepentee . . . . . . xxxvi 



