DR. CASEY, by the publication of this third treatise, has quite fulfilled the expectations we had formed when we stated, some months since, that he was engaged upon its compilation. It is a worthy ...

(1) CHRISTIAN VON STAUDT'S “Beiträge zur Geometrie der Lage” was published so long ago as 1857; about the year 1871 Felix Klein wrote a series of papers emphasising the fact that it is possible to ...