CORRIGENDA. 



Page 10, line 2 from bottom 1897 change to 1867. 

 ,, 57, in lettering of Fig. 28 ma change to mg. 

 84, line 10 Denicker change to Deniker. 

 ,, 209, line 5 from bottom Sluier change to Sluitcr. 

 ,, 290, footnote * enclose in square brackets. 



