Contents. ix. 
PAGE 
The Pholas, 96 
Procuring a Specimen, ... ... ... ... ... ... 97 
Description of Valves, ... ... ... ... ... ... 97 
Rock Boring Operation, ... ... ... ... ... ... 98 
The Excavated Rock, 98 
How the Debris in the Cavity is dispensed with, ... ... ... 98 
Theories regarding the Operation, ... ... ... ... ... 99 
Personal Observations, ... ... ... ... ... ... 101 
Descriptions of Organs, ... ... ... ... ... ... 101 
Conclusions arrived at, ... ... ... ... ... ... 103 
CHAPTER XII. 
Early Impressions of the Beauties of the Creatures, ... ... 104 
My First Lessons on Marine Zoology, ... ... ... ... 105 
Dredging Ashton Bay, Gourock, ... ... ... ... ... 106 
Contents of Drag, ... 107 
CHAPTER XIII. 
At the Tank, 109 
Bula Lignaria, ... ... ... ... ... ... ... ... 109 
The Velvet Fiddler, 110 
Lima Hians, ... ... ... ... ... ... ... ... Ill 
The Spiky Scallop, Ill 
The Hermit Crab, 112 
Construction of Hermit Crab, ... ... ... ... ... 113 
The Cloaklet and Anemone, ... ... ... ... ... 115 
The Crab's Mode of getting into Cloaklet, ... ... ... ... 115 
The Movements when within, ... ... ... ... ... 116 
The Eyes and Power of Sight, ... ... ... ... ... 117 
