It is not often that the writer of a mathematical book is privileged to have such a varied experience as the author of this volume. Mr. Craig declares in the preface that he has been called upon to ...

Arc length is a fraction of circumference. Area of a sector is a fractions of the area of a circle. Both can be calculated using the angle at the centre and the diameter or radius. Practice circle ...

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 ...