xlii 



REPORT — 1873. 



Date and Place. 



Lecturer. 



Subject of Discourse. 



Lectures to the Operative Classes. 



1867. DuTidee.. 



1868. Norwicli 



1869. Exeter .. 



1870. Liverpool , 



1872. Brigbton , 



1873. Bradford . 



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

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

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



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



F.E.S. 

 William Spottiswoode, LL.D., 



P T? S 

 C. W.' SiemenB, D.C.L., F.E.S... 



Matter and Force. 



A jiiece 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. 



