80 CLASSIFICATION OF SHELLS,
in the shape of a boat or canoe, so it cannot be a chiton."
" Will you go on to the next class, if you please ?"
" I have not finished the account," said Edward; " but, since you are so well satisfied, we will try the lepas, or barnacle."
Edward reads :—" Shell affixed at the base ; and consisting of many unequal erect valves."
" That will do, so far," said Lewis, as Edward waited to see the result of his further examination. " I dare say this is a lepas. But, oh ! mamma," he cried, changing his tone, " there are three or four orders in this class. How shall we fix on the right one ?"