Lalanne

12mo, 1 p, 7 lines. Good, with the address on the verso of the second leaf of the bifolium, which also carries the broken red wafer. Written in French. An interesting communication between two of the leading lights of French nineteenth-century mathematics. Lalanne describes Moigno as 'toujours le juge bienveillant et aimable que je connais depuis si longtemps'.

Written on both sides of the card, dimensions 5.5 x 9 cm. Good, with a little light scuffing on the front. Communication between two leading lights of French nineteenth-century mathematics. Printed text reads 'VICE-AMIRAL DE JONQUIERES | MEMBRE DE L'INSTITUT | AVENUE BUGEAUD, 2'. Asks Lalanne to 'inscrire Monsieur Bonnaffé, lauréat de l'Institut, parmi les lecteurs'.

12mo, 2 pp, 11 lines. Concerns the 'porteur de ce billet', a 'M. Laudet', who has been the victim of 'un affreux malentendu'. 'Le malheureux perdait sa femme au moment où il manquait une garde'.