THIS is a good elementary text-book, founded on the work by M. E. Lagout (“Takimetry”), which we have already noticed (NATURE, vol. xvi. p. 226). The ground covered by the work before us is not quite ...

THIS text-book of modern projective geometry forms an admirable introduction to the subject, and should be known to all who are interested in this branch of mathematics. The first chapter deals with ...

Mathematics in Mesopotamia : Where did mathematics begin? ; Political history in Mesopotamia ; The number symbols ; Arithmetic operations ; Babylonian algebra ; Babylonian geometry ; The uses of ...