...obfervation 9Ï Dr. Taylor, who, in j.is. Preface to the fecund edition of hi* prinД ' ciples. ctples, obferves, that he makes " no difference between the plane of the horizon and any other plane whatfocver" ; a circumftance which very much obfcured his principles, particularly to thofe who, with...

...conveniently be handled, by finding other lines of the same nature belonging to them. But in this book I make no difference between the plane of the horizon, and any other plane whatsoever ; for since planes, as planes, are alike in geometry, it is most proper to consider them...

...conveniently be handled, by finding other Lines of the fame nature belonging to them. But in this Book I make no difference between the Plane of the Horizon, and any other Plane whatfoever j for fince Planes, as Planes', are alike in Geometry, it is mo ft proper to confider them...