LECTDEES TO THE OPEEATIVE CLASSES. 



Ixiii 



LECTUEES TO THE OPERATIVE CLASSES. 



Date and Place 



1867. Dundee.. 



1868. Norwich 



1869. Exeter .. 



1870. Liverpool.,,. 



1872, 

 1873, 

 1874, 

 1875, 

 1876, 



1877. 

 1879, 

 1880. 

 1881. 



1882 



1883. 



1884. 

 1885. 

 1886. 



1887. 

 1888. 



1889. 



1890. 

 1891. 



Brighton 

 Bradford 

 Belfast . , . 

 Bristol ... 

 Glasgow 



Plymouth 

 Sheffield 

 Swansea 

 York 



Southamp- 

 ton. 

 Southp irt 

 Montreal ... 

 Aberdeen ... 

 Birmingham 



Manchester 

 Bath 



Newcastle- 

 upon-Tyne 



Leeds 



CardifE 



Lecturer 



Prof. J. Tyndall, LL.D., F.E.S. 

 Prof. Huxley, LL.D., F.R.S. 

 Prof. Miller, M.D., F.E.S. ... 



Sir John Lubbock, Bajt.,M.P., 



F.E.S. 

 'W.Spottiswoode,LL.D.,F.E.S. 

 C. W. Siemens, D.C.L., F.R.S. 



Prof. Odling, F.E.S 



Dr. W. B. Carpenter, F.E.S. 

 Commander Cameron, C.B., 



R.N. 



W. H. Preece 



W. E. Ayrton 



H. Seebohm, F.Z.S 



Prof. Osborne Reynolds, 



F.E.S. 

 John Evans, D.C.L.,Treas. E.S. 



Sir F. J. Bramwell, F.E.S. ... 



Prof. E.S. Ball, F.E.S 



H. B. Dixon, M.A 



Prof. W. C. Roberts-Austen, 



F.R.S. 



Prof. G. Forbes, F.R.S 



Sir John Lubbock, Bart., M.P., 



F.R.S. 

 B. Baker, M.Inst.C.E 



Prof. J. PeiTy, D.Sc, F.E.S. 

 Prof. S. P. Thompson, F.E.S. 



Subject of Discourse 



Matter and Force. 



A Piece of Chalk. 



Experimental Illustrations of the 

 modes of detecting the Composi- 

 tion of the Sun and other Heavenly 

 Bodies by the Spectrum. 



Savages. 



Sunshine, Sea, and Sky. 



Fuel. 



The Discovery of Oxygen. 



A Piece of Limestone. 



A Journey through Africa. 



Telegraphy and the Telephone. 



Electricity as a Motive Power. 



The North-East Passage. 



Eaindrops, Hailstones, and Snow- 

 flakes. 



Unwritten History, and how to 

 read it. 



Talking by Electricity — Telephones. 



Comets. 



The Nature of Explosions. 



The Colours of Metals and their 

 Alloys. 



Electric Lighting. 



The Customs of Savage Races. 



The Forth Bridge. 



Spinning Tops.. 

 Electricity in Mining. 



