Reference numberEL/L3/49
TitleAntoni van Leeuwenhoek to the Royal Society
CreatorLeeuwenhoek; Antoni van (1632-1723); Dutch tradesman and scientist
Date5 February 1703
DescriptionSigned autograph
Observations of the colony-forming flagellate 'Anthophysa vegetans' from Delft canal water; observations of dissolving silver in aqua fortis (nitric acid and sulphuric acid) and gold in aqua regia (mixture of nitric acid and hydrochloric acid); observations of the forms in which gold is precipitated from the solution; reasons why there is little duckweed on the surface of water in cold weather
Read to the Royal Society on 17 March 1703
10 red-chalk figures attached
Extent20 sides
Access statusOpen
Related materialEnglish translation see EL/L3/50
Transcribed and translated in 'Alle de brieven van Antoni van Leeuwenhoek', edited, illustrated and annotated by Committee of Dutch Scientists, vol 14, p 181
English translation printed in 'Philosophical Transactions', vol 23, no 286, p 1430
URL descriptionAlso available on Early Modern Letters Online
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