[ ] 
Merite^ Eq., Memh. Royal and Imp. Acadd. of Sciences, Petershurgh, Florence, 
Copenhagen, Berlin, Gottingen, Modena, Stockholm, Munich, Bruxelles, Vienna, 
Bologna, Commander of the Legion of Honour, &c. &c page 145 
XI. On Autopolar Polyedra. By the Rev. Thomas P. Kiekma^’^, A.M., F.R.S., Rector 
of Croft with Southworth. Commumcated hy Aethue Catlet, Escp, F.R.S. 183 
XII. On the Fi-partitions of the B-gon and B-ace. By the Rex. TnoiiAS P. Kieealan*. 
A.M., F.R.S. , Rector of Croft with Southworth. Communicated hy Aethue 
Cayley, Esq., F.R.S 217 
XIII. A Memoir upon Caustics. By Aethue Cayley, Esq 273 
XIV. On the Dioecious Character of the Rotifera. By Philip Hexey Gosse. Commur 
nicated hy Thomas Bell, F.R.S., P.L.S., F.G.S., Professor of Zoology in King's 
College 313 
XV. On the Structure and Motion of Glaciers. By Joiix Tyxdall, F.R.S., Professor of 
Natural Philosophy, Royal Institution ; and Thomas H. Huxley, F.R.S., Fullerian 
Professor of Physiology, Royal Institution 327 
XVI. Description of the Foetal Membranes and Placenta of the Elephant (Elephas Indi- 
cus, Cuv.), with Remarks on the value of placentary characters in the classif- 
cation of the Mammalia. By Professor Owen, F.R.S. 347 
XVII. Photo-chemical Researches.—Boxt I. Measurement of the Chemical Action of Light. 
By PoBEET Bunsex, Professor of Chemistry at the University of Heidelberg, and 
Hexey Exfield Eoscoe, B.A., Ph.D., Professor of Chemistry at Owens College, 
Manchester. Communicated hy Professor Stokes, Sec. R.S 355 
XVIII. Photo-chemical Researches. — Part II. Phenomena of Photo-chemical Induction. 
By Eobeet Buxsex, Professor of Chemistry at the University of Heidelberg, and 
Hexey Expield Eoscoe, B.A., Ph.D., Professor of Chemistry at Owens College, 
Manchester. Communicated hy Professor Stokes, Sec. R.S 381 
XIX. On the Immediate Principles of Human Excrements in the Healthy State. By 
W. Maecet, M.D., F.C.S., Assistant Physician to the Westminster Hospital. 
Communicated hy H. Bexce Joxes, M.D., F.R.S 403 
XX. A Memoir on Curves of the Third Order. By A. Cayley, Esq., F.R.S. . . 415 
XXI. On some of the Products of the Destructive Distillation of Boghead Coal. — Part I. 
By C. Geeville Williams, Lecturer on Chemistry in the Normal College, Swansea. 
Communicated hy Dr. Shaepey, Sec. R.S 447 
XXII. On an Element of Strength in Beams subjected to Transvo'se Strain, named hy 
the author “ The Resistance of Flexure." — Second Paper. By William Hexey 
Baelow, Esq., F.R.S. &c 463 
