CONTENTS. XV 



Mr. A. B. Brom'N ou a direct-acting Combined Steam and Hydraulic Crauo . 231 



Mr. Alexakdeb Buchan on the Rainfall of Scotland 232 



— on the Rainfall of the Northern Hemisphere in July, 



as contrasted with that of January, with Remarks on Atmospheric Circula- 

 tion 232 



on the Great Heat of August 2nd-4th, 18G8 232 



Mr. TuoMAS Carr on a new iNIill for Disintegrating Wheat 233 



Mr. R. Douglas on the Corliss Engine 234 



Mr. R. F. Fairlie on the Gauge of Railways 234 



Mr. A. E. Fletcher on the Rhysimeter, an Instrument for Measuring the 

 Speed of Flowing Water or of Ships 234 



Mr. Lavington E. Fletcher on Steam-boiler Legislation 236 



Mr. Thomas Gillott on Designing Pointed Roofs 239 



Mr. jAiiES Leslie's Description of a Salmon-ladder meant to suit the vary- 

 ■ ing levels of a Lake or Reservoir 239 



J\Ir. J. D. Morrison on a new S3-stem of Warming and Ventilation 240 



Mr. R. A. Peacock on Chain-Cable Testing, and lu-oposed New Testing-Link 240 



Mr. E. C. C. Stanford on the Carbon Closet System 240 



Mr. C. William Siemens on the Steam Blast 240 



Mr. Thomas Ste-st<:nson, Automatic Gauge for the Discharge of Water over 

 Weirs 241 



Thermometer of Translation for recording the Daily 



Changes of Temperatm-o 241 



Mr. MiCHAL Scott on improved Ships of War 241 



Mr. W. Thomson on a Road Steamer 241 



APPENDIX. 



The Rev. Robert Boog Watson's Notes on Dredgings at Madeira 242 



Mr. B. T. LowNE on the Ciliated Condition of the Inner Layer of the Blasto- 

 derm and of the Omphalo -mesenteric Vessels in the Egg of the Coumion 

 Fowl 242 



