INDEX. 



ACANTHIAS VULGARIS 1 

 Acipenser rutheorus .. . 

 Acipenser sturio 

 Acorus calamus 

 Actinia 



Actinia mesembryanthemum 

 Actinoloba dianthus .. . 

 Adamsia palliata 

 Aeration of aquaria .. 

 Air supply to Dublin Aqua 

 rium 



Alcyonium digitatum . . 

 Alisma plantago 

 Alligators 

 Amoeba 



Amphioxus lanceolatus 

 Anacharis 



Ancient fish-ponds . 

 Angel fish 

 Annarhicas lupus 

 Annelids 

 Anodonta cygnea 

 Antennularia antennina 

 Anthea cereus 

 Aphrodita 

 Aquatic plants 

 Arachnidse 



Argyoneta aquatica . 

 Artificial sea-water . 

 Ascidia intestinalis . 

 Ascidia vitrea 



