Croaker, Henry, fl1818 - 1820 (petitioner to the Board of Longitude)
Found in 12 Collections and/or Records:
Letter and proposal from Henry Croaker on the motion of heavenly bodies, 1819-02-17
Includes drawings of a sun-dial and compass, a diagram on the circular motion of the sun, mathematical calculations and tables of longitude.
Letter from Henry Croaker to Dr Thomas Young, 1819-06-14
Concerning his invention of a mechanism to demonstrate the motion of the sun, moon and tides. Includes a drawing and calculations.
Letter from Henry Croaker to Dr Thomas Young, 1819
Containing extracts of an 84 verse poem by Croaker.
Letter from Henry Croaker to Dr Thomas Young, 1819-09-16
In which Croaker refers to ideas shown to him 'by dreams'.
Letter from Henry Croaker to Dr Thomas Young, 1819-10-08
In which Croaker threatens to present his observations on longitude to 'a foreign board' unless given an immediate answer on their worth.
Letter from Henry Croaker to Dr Thomas Young, 1820-04-09
The letter begins with a table entitled 'truth demonstrated on the laws of equity from Alla to George the Fourth England'.
Letter from Henry Croaker to Dr Thomas Young, 1820-06-18
Containing further observations in verse, which came to him in a dream.
Letter from Henry Croaker to Dr Thomas Young, 1820-08-16
Containing observations in verse.
Letter from Henry Croaker to the Board of Longitude, 1818-01-10
Outlining his proposal for finding longitude. Includes a dial table, tables of longitude (for January to December 1818) and a drawing of 'a sun-dial on the perpetual motion'.
Letter from Henry Croaker to the Board of Longitude, 1819-04-09
Outlining his proposal for finding longitude.
Letter from Henry Croaker to the Board of Longitude, 1820-09-25
Concerning the movements of the heavenly bodies.
Philosophical observations by Henry Croaker, 1819-09-09
Set of philosophical observations relating to the longitude problem. Includes a drawing and calculations.