iv 



PEEFACE. 



Prussia, Italy, and Germany, we have received many complimentary 

 opinions, but these expressions will be to us only the incentive to do 

 better work to more richly deserve them. , Eor contributions to the 

 present volume our best thanks must be offered to Sir Eoderick 

 Murchison, Mr. C. Carter Blake, Mr. Pengelly, Mr. J. Elliott, Mr. 

 S. P. "Woodward, Mr. Andrew Taylor, Dr. Eubidge, Professor T. 

 Eupert Jones, Mr. W. Murray, the Eev. S. Lucas, Count Marschall 

 Director Haidinger, Professor King, Professor Huxley, Professoi 

 Busk, Professors Dana and Silliman, Mr. Du Noyer, Mr. Guppy 

 Mr. "Wyatt, Dr. Wilkins, Mr. James Plant, Mr. Bensted, Mr. Johi 

 Taylor, Dr. Gibb, Eev. Hugh Mitchell, Professor Ansted, Professo 

 Harkness, Mr. Charles Moore, Mr. "Wynne, Mr. Sorby, Mr. David 

 son, Mr. C. B. Eose, Eev. J. Crompton, and Mr. "W. Bollaert. 



S. J. MACKIE. 



