CORRIGENDA 



Page 85, line i^^for "as a cannon" read^'^is a cannon-ball.'' 

 85? ,5 2 5, /<?r "energy" rm^" velocity." 

 98, ,, 2^^ for " carbon " read " hydrogen." 

 144, „ A^for " estimate " rf<2^ " provisional estimate." 

 147, „ i^tifor " inorganic " read " organic." 

 191? J5 1 5,/(?r" brain "r^^rtf" rough anatomy of the brain. 



