Additional observations, tending to investigate the symptoms of the variable emission of the light and heat of the sun
Subtitle: with trials to set aside darkening glasses, by transmitting the solar rays through liquids; and a few remarks, to remove objections that might be made against some of the arguments contained in the former paper
By: By William Herschel, L.L.D. F.R.S. From the Philosophical transactions
Publisher: Printed by W. Bulmer and co. Cleveland-row, St. James's.
Published: 1801
Place of publication: London
Language: eng
Number of pages: 11
Notes: Reprinted from the Philosophical transactions of the Royal society of London, v.91.

A continuation of his Observations tending to investigate the nature of the sun, 1801.