Note I — LECTURE II.
Reading edition
The diagram used at the lecture is engraved on page 30; the reader had better draw it larger for himself, as it had to be made inconveniently small for this size of leaf.
Reading edition
The diagram used at the lecture is engraved on page 30; the reader had better draw it larger for himself, as it had to be made inconveniently small for this size of leaf.