go THE HAMILTON ASSOCIATION. 
penetrate into the place of habitation, some supposing a 
secreted acid was used for the purpose. A French naturalist at 
last Solved the difficulty by proving the valves were adequate 
to pierce limestone, and a Brighton gentleman (Robertson) 
explained, from actual observations, how the common Pidack 
penetrated chalk rocks. Species are found fossilized in ‘‘ the 
Lias,” and also the Teredo, -both in America and Europe, but 
neither rewarded the writer’s researches during a rather hurried 
examination at Bath of the rocks in question many years ago. 
Little reliance may be placed on assertions of ordinary news- 
papers in matters relating to natural history, but we would feel 
inclined to believe there may be some truth in a statement to 
the effect that the.-Teredo had been discovered in Tertiary 
deposits in Europe also. There appears nothing extraordinary 
in this. The Pholas has been found embedded in amber, a 
production of that period. 
THE SOLENIDA. 
The Razor fishes, of world-wide distribution, gaping at both 
ends, likewise possess the property of concealing themselves, 
burrowing in sand, at or close to low water mark, nearly perpen- 
dicularly, and leaving a peculiar opening which reveals their 
position to people, who do not hesitate to fetch them to the sur- 
face by means of a stout piece of bent wire. By many they are 
looked upon as a great delicacy, the late Professor Forbes pro- 
nounced them to be excellent when cooked. It is fossilized in 
the Eocene ‘‘ Cutellus (Cerati Solen) legumen.” A British species 
bears a near resemblance to ‘‘ Orthodesma ”’ paralellum, (Hall), 
so that Woodward considered the latter probably was a Cambro- 
Sil. Razor fish.. An internal cast (both valves) obtained some 
years ago from the Slabtown gravel pit, led one to imagine the 
shell to be more nearly allied to the ‘‘ Wodzola” (Horse Mussel) 
—Lamark. 
THE MYACID2. 
This group also has a habit of burrowing; one of the 
family (Myaarenarie), Woodward remarks, is found a foot deep 
in its taorite haunt, viz. : the mouths of rivers on the British 
