Leçons sur la DÉTERMINATION DES ORBITES Professées a la Faculté des Sciences de Paris, par F. TISSERAND. Rédigées et Développées pour les CALCULS NUMÉRIQUES par J. PERCHOT. (Lessons on the DETERMINATION OF THE ORBITS as Taught by the Paris Faculty of Science, by FELIX TISSERAND. Reedited and Developed for use in NUMERICAL CALCULATIONS, by J. PERCHOT. PARIS: Gauthier Villars, 1899. TEXT IN FRENCH. PRESENTATION COPY, SIGNED and INSCRIBED in French on the title page by J. PERCHOT. The main work by Tisserand / Perchot is BOUND TOGETHER with TWO WORKS in SPANISH on the same subject. (1) ALEXANDER WILKINS, "DETERMINATION DE ORBITAS DE PLANETAS Y COMETAS", LA PLATA, 1939. (2) JULIO GARAVITO ARMERO, "UNA EXPOSICION ELEMENTAL DEL METODO DE OLBERS PARA EL CALCULO DE UNA ORBITA COMETARIA", no publication place or date. Bound in a FINE BINDING by M. PEREZ NAVAS with a small embossed label at the bottom margin of the inside rear cover that states: "ENCUADERNACIÓN / M PEREZ NAVAS / TLF 21310 / CARACAS". Calf Leather Spine and Corners with Marbled Paper Covered Boards, gilt titling to the spine, 9x11 inches. Pagination: (1) Leçons sur la DÉTERMINATION DES ORBITES, xiv, 123, [1] pages. (2) ORBITAS DE PLANETAS Y COMETAS, 70 pages. (3) METODO DE OLBERS, 14 pages (pages numbered 241 to 254). Previously the

COPY of an ASTRONOMER / MATHEMATICIAN, perhaps a professor or student. There are 11 LENGTHY HANDWRITTEN MATHEMATICAL NOTES tipped in to 7 printed pages that refer to the subject matter on those pages. There are also relevant margin notes, in French, equations and marks here and there. All the tipped in paper and margin notes are on the first 37 pages of the Tisserand / Perchot work. GOOD CONDITION: The finely bound covers are very good, with some scrapes to the leather and paper covered boards, overall quite lovely. Internally, the pages are lightly toned; there is some foxing throughout, heavy on the last few pages; there are relevant handwritten margin notes and marks, and some tipped in pages of handwritten notes, as stated above; there are corner creases to the latter pages and some signs of handling here and there; overall a solid, nice copy. INTERNATIONAL BUYERS PLEASE NOTE: This book will require additional shipping charges. After placing your order you will be notified of the additional charges and be able to accept or reject them before your payment is processed. Or you can contact us ahead of time to find out the shipping charge to your country. Thanks.