ERRATA It seems absurd, as the whole book is a misprint: however— On Page 61, for ‘*‘ Themindor ” vead ‘* Ther- midor.” On Page 79, line 10, for ‘‘Be” read ‘‘ He.” NOTES, Page 12, for ““O=Vs” read ““O=\9.” Page 31, for ‘‘Mualtar” read ‘‘ Muattar.”’ Page 39, for ‘‘10” read ‘‘80.”