APPENDIX. 



Perhaps the following summary may be interesting. 

 I may as well observe that by far the greater number 

 of species belonging to the classes Pisces, Crustacea, 

 Mollusca, Echinodermata, Cselenterata are marine, 

 as are also most of the Algse. 



British Isles. 



17,542? 



7111 



Carried forward 4319 16,724 



