PROCEEDINGS OF 

 THE ROYAL SOCIETY. 



VOL. XLL 



No. 250. 



CONTENTS. 



December 9, 1886. 



PAGE 



I. Note to a Paper on the G-eometrical Construction of the Cell of the Honey 

 Bee ('Roy. Soc. Proc.,' vol. 39, page 253). By Heney Hennessy, 

 F.R.S., Professor of Applied Mathematics in the Royal College of 



II. A New Method for the Quantitative Estimation of the Micro-organisms 

 present in the Atmosphere. By Percy F. Frankland, Ph.D., B.Sc, 

 F.C.S., F.I.C., Assoc. Roy. Sch. Mines 



III. Further Experiments on the Distribution of Micro-organisms in Air (by 

 Hesse's method). By Percy F. Frankland, Ph.D., B.Sc, F.I.C., 

 F.C.S., and T. Gr. Hart, A.R.S.M 



TV. On the Intra-Ovarian Egg of some Osseous Fishes. By Robert Scharef, 



Y. Note on a New Form of Direct Yision Spectroscope. By Gr. D. Liyeing, 

 M.A., F.R.S., Professor of Chemistry, and J. Dewar, M.A., F.R.S., 

 Jacksonian Professor of Natural Philosophy, University of Cambridge 449 



I. Note on Specific Inductive Capacity. By John Hopkinson, M.A., D.Sc, 



F.R.S 453 



Addendum to the same. By Professor Quincke, For. Mem. R.S. . 458 



II. On a Varying Cylindrical Lens. By Tempest Anderson, M.D., B.Sc. . 460 



III. On the Action of the Excised Mammalian Heart. By Augustus 



Waller, M.D., and E. Waymouth Reid, M.B 461 



Science, Dublin 



442 



Ph.D., B.Sc, 



447 



December 16, 1886. 



For continuation of Contents see 4<th 'page of Wrapper. 



Price Two Shillings and Sixpence. 



