CONTENTS OF No. XCIIL— New Series. 



MEMOIRS: 



PAGE 



Notes on Echinoderm Morpholon;y, No. VII. On the Apical System 

 of the Ophiurids. By P. Herbekt Cakpentee,, M.A., Assistant 

 Master at Eton College. (With Plate I.) . . . .1 



On the Homologies of the Primary Larval Plates in the Test of 

 Bracliiate Echinoderms. By W. Pekcv Sladen, F.L.S., E.G.S. 

 (With Plate I.) 24 



On the Origin of Metameric Segmentation and some other Morpholo- 

 gical Questions. By Adam Sedgwick, M.A., Fellow and Assistant 

 Lecturer of Trinity College, Cambridge. (With Plates II and IIL) 43 



On Certain Abnormalities in the Common Frog (Rana temporaria). 

 1. The Occurrence of an Ovotestis. 2. Abnormalities of the Ver- 

 tebral Column. By Alfred Gibbs Bourne, B.Sc.Lond., University 

 Scholar in Zoology, and Assistant to the Jodrell Professor, University 

 College, London. (With Plate IV.) . . . . .83 



Researches on the Intracellular Digestion of Invertebrates. By Dr. 

 Elias Mctschnikoff ....... 89 



The Ancestral History of the Inflammatory Process. By Dr. Elias 

 Metschnikoff . . . . . . .112 



The Structures connected with the Ovarian Ovum of Marsupialia and 

 Monotremata, By Edward B. Poulton, M.A., of Jesus and Keble 

 Colleges, Oxford. (With Plate V.) .... 118 



On the Skeleto-tropliic Tissues and Coxal Glands of Limulus, Scorpio, 

 and Myirale. By E. Ray Lankester, M.A., F.K.S., Jodrell Pro- 

 fessor of Zoology in University College, London. (With Plates VI, 

 VII, VIII, IX, X, XI) 129 



An Improvement in the Method of Using the Freezing Microtome. 

 By J. SoLLAS, M.A., Professor of Geology in Trinity College, 

 Dublin 163 





