IV CONTENTS. 



CONTENTS OP No. LXVI, N.S.. APRIL, 1877. 

 MEMOIRS : 



PAGE 



Kesume of Recent Contributions to our Knowledge of "Fresh- 

 water Rhizopoda." Part IV. Monothalariiia {Moiiostomata) 

 Lobosa {continued). Compiled by William Archek, F.R.S., 

 M.R.I.A. (Continued from page 80) . . . 107 



An Account of Professor Strasburger's Observations on Pro- 

 toplasm. By Stdkey H. Vines, B.A., B.Sc, Fellow and 

 Lecturer of Christ's College, Cambridge. (With Plate IX) 124. 



^ Researches on the Dicyemidee. By Professor Edouard Vak 

 Beneden, Member of the Royal Academy of Science of 

 Belgium. Abstract by Mr. D'Arcy Power. (With Plate X) 132 



On the Changes produced in the Lungs by the Embryos of 

 Ollidanus tHcuspis. By William Stirling, D.Sc, M.D., 

 Demonstrator of Practical Physiology in the University of 

 Edinburgh. (With Plate XI) . . . .145 



A Contribution to the Anatomy and Physiology of the Retina. 

 By Professor Franz Boll in Rome . . .152 



On Some Points in the Early Development of the Hen's Egg. 

 By P. KiDD, B.A. (With Plate XII) . . .160 



On the Protrusion of Protoplasmic Filaments from the Glan- 

 dular Hairs of the Common Teasel (Bipsacus st/lvesiris). By 

 Francis Darwin, M.B. . . . . .169 



NOTES AND MEMORANDA : 



Sexual Reproduction in Lower Thallophytes . . . 175 



Separation of the Sexes in Sponges .... 185 

 On the Structure of Striped Muscle-Fibre . . .187 



REVIEW: 



1. Compendium of Histology ; twenty-four lectures. By Pro- 



fessor Heinrich Frey. Translated by George R. Cutter, 

 M.D 188 



2. A Course of Practical Histology. By E. A. Schafer, Assistant- 



Professor in University College, London . . , ib. 



3. A Course of Elementary Practical Physiology. By M. Foster, 



M.D., F.B.S., Fellow of and Prailector in Physiology in Trinity 

 College, Cambridge; assisted by J. N. Langley, B.A. . ib. 



PROCEEDINGS OP SOCIETIES : 



Dublin Microscopical Club .... 290 



