Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Henry H. Ludlow (1854-1926) was a mathematician known for his contributions to mathematical tables and computations. His meticulous work in creating accurate logarithmic and trigonometric tables has been instrumental in facilitating mathematical calculations. Ludlow's dedication to precision and detail in mathematical computations has made his tables a trusted resource for students, professionals, and academics alike.