INDEX. I28l 



Basin of, 594 ; an important centre of the French Oyster Industry, 



594; the cultivation of oysters in, of recent date, 594. 

 River of, Natural oyster beds in, 594 ; bad condition of the beds, 

 594; carefully explored by dredging in 1881 with unsatisfactoiy 

 results, 594 ; number of oysters obtained in one hour by one 

 dredger in, 596. 



Ausonius, cited 5 1 . 



Austerbourne, 261. 



Austin, Captain, 1080, 1083, 1088, 1098. 



Australia, 890 ; South, 863 ; overdredging in, 863, 864 ; Pearlers in 

 the North-west of, 916. 



Austrian Government, Observatories established by, 1133; exploring 

 ship, The Tegethoff, 1030. 



Avernus, Lake, 45. 



Avicula (Lat. avicula, a little bird) a tribe of the mollusca ; the genus, 

 907, 908, 949 ; macroptera, 908, 909 ; described, 908 ; stated to be 

 monomyarian, by M. Deshayes, 908 ; to what species^ the term is 

 applied, 908, 909 ; the broad-winged, described, 909 ; distinction 

 between them and the Pintadines, 908, 909. 



Aviculidae, The, 190. 



Avoch, 207. 



Axinus, The, stated to be dioecious, 140. 



Azores, The, 164. 



B. 



Baiae, the Brighton of Ancient Rome, 36, 43, 151. 

 Balani (Gr. balanos an acom) the genus including the common Acom- 

 shells which live in abundance on the rocks of the sea-coast, ^4, 



46, 84. 



Balanns crenatus, 1058. 

 Balbiani, M., 611, 625. 

 Ballynahuck, 231. 

 Baltic Sea, The, (Reference to) 214, 349, 643, 660, 1034; freshness of 



excludes oysters, 120, 644, 659; other conditions of hindering the 



growth of the oyster, 660 ; Nature's efforts to introduce oysters 



into, 660. 



RR 



