E. R.

McGill University,

Montreal,

9 May, 1905.

ERRATA.

Transcriber’s Note:

These corrections have been applied to the text in the book.

page 48, line 24 section 218 should read section 284

„ 77, last line „ 263 „ „ „ 270

„ 123, 5th line from bottom „ 254 „ „ „ 261