VUl CONTENTS. 



rAO* 



XV.— On Erosion of the Surface of Glass, when exposed to the 

 Joint Action of Carbonate of Lime and Colloids. By 

 William M. Ord, M.D., F.R.M.S., F.L.S Part 5 761 



XVI.— On a Septic Microbe from a High Altitude. The Niosen 

 Bacillus. By G. F. Dowdeswell, M.A., F.R.M.S., F.L.S., 

 &c „ 769 



XVII. — On the use of the Avicularian Mandible in the determina- 

 tion of the Chilostomatous Bryozoa. By Arthur \Vm. 

 Waters, F.R.M.S., F.L.S. (Plate XIV.) „ 774 



XVIII.— On some new and rare Desmids. By W. Barwell Turner, 



F.R.M.S., F.C.S. (Plates XV. and XVI.) Part 6 933 



XIX.— Further Experiments on Feeding Insects with the Carved 

 or " Comma " Bacillus. By R. L. Maddox, M.D., Hon. 



F.R.M.S „ 941 



XX,— On the Cholera " Comma" Bacillus. By G. F. Dowdes- 

 well, M.A., F.R.M.S., F.L.S., &c „ 953 



XXI. — Improved Form of Stephenson's Binocular Prisms. By 



CD. Alliens. (Figs. 220 and 221) , 959 



XXII. — Remarks on Prof. Abbe's 'Note on the proper Definition of 

 the Amplifying Power of a Lens or Lens-System.' By 

 E. Giltay, Ph.D., Teacher of Botany at the State Agri- 

 cultural School at Wageningen (Netherlands). (Figs. 

 222 and 223) „ 960 



XXIII. — On the limits of Resolution in the Microscope. By Frank 

 Crisp, LL.B., B.A., V.P. and Trcas. Linn. Soc, Sec. 

 R.M.S. (Figs. 224-8) „ 968 



Summary of Current Re&eakches relating to Zoology and Botany (princi- 

 pally Invertebrata and Cryptogamia), Microscopy, «fec., iNCLUoma 

 Original Communications frchh Fellows and Others.* 



33,212,421,615,780,974 



ZOOLOGY. 

 A.— General, including Embryology and Histology of the Vertebrata. 



FA6S 



Cai>I)WELL, W. H., W. Haacke, and T. Gill — Oviparous Reproduc- 

 tion in the Monotremes Part 1 33 



Caldwell, H. — Embryonic Membranes of Marsupials „ 34 



Hermann, L., and R. v. Gendre — Electromotive Function of the 



Fowl's Egg „ 34 



Brook, G. — Development of the Lesser Weever-fsh {Trachinus vipera} „ 34 



MiNOT, C. S. — Vesicula: seminales of Guinea-pigs „ 35 



LwoFF, W. — Histology of Hairs, Setce, Spines, and Feathers „ 35 



* In order to make the classification complete, (1) the papers printed in the 

 ' Transactions,' (2) the abstracts of the ' Bibliography,' and (3) the notes printed 

 iu the ' Proceedings' are included here. 



