CASSINI JACQUES: (1677-1756) French astronomer. A.L.S., Cassini, two pages, 8vo, Paris, 31st May 1754, to a gentleman, in French. Cassini sends hi...

KAPTEYN JACOBUS: (1851-1922) Dutch astronomer who carried out extensive studies of the Milky Way and was the discoverer of evidence for galactic r...

TOMBAUGH CLYDE W.: (1906-1997) American astronomer who discovered Pluto in 1930. Booklet signed and inscribed, being a 4to printed copy of an essa...

ALLMAN GEORGE: (1812-1898) Irish ecologist, botanist and zoologist who served as Emeritus Professor of Natural History at Edinburgh University. A....

HUBER FRANCOIS: (1750-1831) Swiss entomologist who specialised in honeybees. A fine L.S., Francois Huber, three pages, 4to, Ouchy, Lausanne, 11th ...

DOLOMIEU DEODAT GRATET DE: (1750-1801) French geologist after whom the mineral and the rock dolomite were named. A supporter of Napoleon Bonaparte...

MURCHISON RODERICK: (1792-1871) Scottish geologist. A.L.S., Rodk. Murchison, one page, 8vo, Vevey, n.d. ('Monday morning'), to Monsieur de Severy....

BUFFON COMTE DE: (1707-1788) Georges-Louis Leclerc, Comte de Buffon. French Naturalist and Mathematician. Widely regarded as the father of natural...

CLAIRAUT ALEXIS: (1713-1765) French mathematician, astronomer and geophysicist whose work helped to establish the validity of the principles and r...

MONGE GASPARD: (1746-1818) Comte de Péluse. French Mathematician, widely regarded as the inventor of descriptive geometry and the father of differ...

GAUSS CARL FRIEDRICH: (1777-1855) German mathematician and physicist who made significant contributions to many fields in mathematics and science....

GALTON FRANCIS: (1822-1911) English polymath, a proponent of social Darwinism, eugenics and scientific racism. A.L.S., Francis Galton, three pages...

RUBINOWICZ WOJCIECH: (1889-1974) Polish theoretical physicist who made contributions in quantum mechanics, mathematical physics and the theory of ...

PASTEUR LOUIS: (1822-1895) French Chemist & Microbiologist. A good A.L.S., `L. Pasteur´, one page, to a 12mo grey oblong card, 5 x 4, Arbois, 5th ...

PASTEUR LOUIS: (1822-1895) French chemist and microbiologist, renowned for his discoveries of the principles of vaccination and pasteurisation. A....

DUCLAUX EMILE: (1840-1904) French microbiologist and chemist who collaborated with Louis Pasteur in the study of silkworm diseases. A.L.S., E Ducl...

SCIENTISTS: An unusual 4to sheet of paper featuring the manuscript title Maximes de vie des Grands Savants Contemporains (Translation: Maxims of L...

‘I shall have the honour of discussing with you the most important part of your work, that of the natural classification’             958      HUM...

BRAZZA PIERRE SAVORGNAN DE: (1852-1905) Italian-French explorer of Central Africa. A.L.S., P S de Brazza, two pages, n.p., 19th January 1885, to a...