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Experiments and Observations on the various Alloys, on the specific Gravity, and on the comparative Wear of Gold. Being the Substace of a Report made to the Right Honourable the Lords of the Committee of Privy Counsel, appointed to take into the consi...
(London, W. Bulmer and Co., 1803). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1803 - Part I. Pp. 43-194 a. 1 large folded engraved plate, showing Cavendish's apparatus for measuring wear. Clean and fine.
First printing of Hatchett's report to the Committee appointed by the Privy Councel ""to take into consideration the state of the coins of this Country...""Towards the end of the 18th century concern was expressed that the economy of the realm was suffering great losses through wear og gold coinage. The Committee appointed Hatchett and Cavendish to ""examine by such experiments as should de deemed requisite, whether any of these defects really existed.""
An Analysis of the magnetical pyrites" with Remarks on some of the other Sulphurets of Iron. Read May 17, 1804.
(London, W. Bulmer and Co., 1804). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1804 - Part II. Pp. 313-345. Clean and fine.
First appearance of an importent paper in which Hatchett communicates his discovery that iron must be combined with a large portion of either carbon, phosphorus or sulphur in order to acquire the property of receiving permanent magnetic virtue, there being, however, a limit beyond which an excess of either of the above-named substances renders the compound wholly incapable of exhibiting the magnetic energy.Together with another paper by Patrick Russell: ""Remarks on the voluntary Expansion of the Skin of the Neck, in the Cobra de Capello or booded Snake of the East Indiea. With a Description of the Structure ofthe Parts which perform that Office. By Everard Home."" Pp. 346-352 a. 2 large engraved plates showing the snake.
On an artificial Substance which possesses the principal characteristic Properties of Tannin. Read April 25, 1805.
(London, W. Bulmer and Co., 1805). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1805 - Part II. Pp. 211-224.
First printing of Hatchett's well known paper in which he describes the preparation of an artificial tanning agent, containing importent observations on resins.
On the Observations on the Change of some of the proximate Principles of Vegetables into Bitumen" with analytical Experiments on a peculiar Substance which is found with the Bovey Coal. Read June 14, 1804.
(London, W. Bulmer and Co., 1804). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1804 - Part II. Pp. 385-410.
First appearance of one of Hatchett's importent works in the field of organic materials.
