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...

SABINE EDWARD: (1788-1883) Irish astronomer, geophysicist, ornithologist & explorer. A.L.S., Mr. Le Capitaine Sabine, in the third person, one pag...

WEINEK LADISLAUS: (1848-1913) Austro-Hungarian astronomer. A.L.S., Prof. Dr. L. Weinek, one page, 8vo, Prague, 27th October 1885, to a Professor, ...

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

SCHMIDT BERNHARD: (1879-1935) Estonian astronomer and optician who invented the Schmidt telescope in 1930. A.L.S., B. Sch[mi]dt, to one side of a ...

TOMBAUGH CLYDE W.: (1906-1997) American astronomer who discovered Pluto in 1930. Signed colour 10 x 8 photograph, the official NASA image being an...

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

PARMENTIER ANTOINE-AUGUSTIN: (1737-1813) French pharmacist and agronomist, a vocal promoter of the potato as a food source for humans in France an...

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 ...

[MINERALOGY]: A manuscript D.S. Maximinus Fuxius, in the third person, by the Benedictine monk Maximin Fluxus, director of Natural History at St. ...

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...

`I have always preferred Armagnac more than Cognac…´ LEVI-STRAUSS CLAUDE: (1908-2009) French Anthropologist whose work was key in the development ...

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...

LANGEVIN PAUL: (1872-1946) French physicist. A.L.S., P Langevin, one page, 8vo, Rue Vauquelin, Paris, 12th January 1934, to a gentleman, on the pr...

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...

DEBIERNE ANDRE-LOUIS: (1874-1949) French chemist, often considered the discoverer of the element actinium. Manuscript D.S., A. Debierne (twice), o...

FREUD SIGMUND: (1856-1939) Austrian neurologist, the founder of psychoanalysis. An important A.L.S., Freud, two pages, large 4to, Vienna, 9th Octo...

JUNG CARL: (1875-1961) Swiss psychiatrist and psychoanalyst who founded analytical psychology. T.L.S., C. G. Jung, one page, oblong 8vo, Kusnacht,...

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

SCIENCE & MEDICINE: Selection of vintage signed 5 x 7 photographs and slightly smaller and larger, some T.Ls.S. etc., by various biologists, surge...

SCIENCE: A United States First Day of Issue cover commemorating the Unite Nations Science and Technology Conference in Geneva, 1963, individually ...

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

LELEWEL JOACHIM: (1786-1861) Polish historian, geographer, bibliographer and politician. A.L.S., Lelewel, one page, small 8vo, n.p., 25th March 18...

LELEWEL JOACHIM: (1786-1861) Polish historian, geographer, bibliographer and politician. D.S., Lelewel, one page, oblong 8vo, Brussels, 29th July ...

HEDIN SVEN: (1865-1952) Swedish geographer, topographer & explorer. Vintage signed sepia postcard photograph of Hedin in a head and shoulders pose...

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...

CHARCOT JEAN-BAPTISTE: (1867-1936) French scientist and polar explorer. A good L.S., J. Charcot, three pages, 8vo, Rue de l'Universite (Paris), 8t...

BYRD RICHARD E.: (1888-1957) American naval officer, polar explorer and pioneer aviator who claimed to have led the first expeditions to reach bot...

SCOTT ROBERT FALCON: (1868-1912) British Antarctic explorer. A very fine, rare vintage signed sepia 7 x 10 photograph, the photogravure image depi...

ITALIAN EXPEDITION TO K2: An excellent vintage signed 12 x 15.5 photograph by twelve members of the Italian Expedition to K2 in 1954, which result...