XIV CONTENTS. 



Page 



Mr. James Mactear on a new Mechanical Furnace used in the Alkali Manu- 

 facture and for Calcining-purposes generally 217 



Mr. P. J. Margary on the Saltash Bridge 217 



Mr. Loftus Perkins on Perkins's High-pressure Engine 217 



Professor O. Reynolds on certain Dynamometers 217 



on Compound Turbines 217 



on the Difference of the Steering of Steamers with the 



Screw reversed when under full way and when moving slowly 218 



Mr. J. N. Shoolbred on a more extended use of the Ordnance Datum of 

 Great Britain 218 



Mr. G. Stevenson on a Suspended Railway 218 



Sir William Thomson on the Importance of giving a Distinctive Character 

 to the Needles Light 218 



on an Improved Method of Recording the Depth in 



Flying Soundings 218 



on a Navigation Sounding Machine for use at Full 



Speed 218 



on the Mariner's Compass, with Correctors for Iron 



Ships 218 



Mr. R. C. Townsend on the Plymouth Breakwater 219 



Mr. F. H. Varley on Electric Block Telegraphs , 219 



Mr. R. N. Worth on the Government Establishments of Plymouth and 

 Neighbourhood 219 



