This item was about the discovery of 5 Asteroids (or minor planets as they were known at that time) Asia, Sappho, Sylvia, Camilla and Vera at Madras. The first was named asteroid 'Asia' as it was the first to be discovered by an observer on this continent. This page from Pogson's log book shows the first observations of Asia made on April 18th and 19th 1861.

This item was an instrument used to measure time. A wire rope is wound around a drum which unwinds in a fixed time under gravity. A maker which moves horizontally, marks out the time elapsed on a linear scale. This instrument was used before the invention of the pendulum clock for Astronomical measurements at the Madras Observatory.

Earth, Moon and Planets was a book written by Fred Lawrence Whipple and originally published in 1947. It has 302 pages. The book covers various aspects of the Earth, Moon, and planets within our solar system, like the physical characteristics of these bodies, their orbits, geological features, atmospheric properties, and the processes that shaped them.

This letter was about earthquake records by Milne Seismograph. A register from Alipore observatory from 1st January to 30th June 1903.

The item was about the original glass plate that recorded the "Evershed Effect" in 1909.

The book General Astronomy was written by ?Sir Harold Spencer Jones. It was published in ?1922. This book contains 392 pages and covers various topics in astronomy. The topics mentioned in the book are related to ?celestial bodies, planetary motion, telescopes, and the solar system. It also includes information on stars, galaxies, and other astronomical phenomena.

The letter is a Government Order forwarded to the Director of Kodaikanal & Madras Observatories informing about the sanctioning of Rs.6380 for the construction of a photoheliograph at Kodaikanal Observatory.

This item was about total solar eclipse of 18th August 1868. At Masulipatnam Pogson detected the hydrogen line emission, with a spectroscope. He saw a bright yellow line near the position of D lines of Sodium. The line originated from hitherto unknown element later termed as helium after the source of earliest detection. Hand coloured sketch of the solar spectrum during the Total Solar Eclipse of 1868. Hand coloured picture of the sun before and after the total solar eclipse 1868.

This item was about the high resolution line sketch spectra captured by John evershed during his experiment at Kodaikanal Observatory. While experimenting, he came across to capturing the high resolution spectra of Altair, Nova Aquila, Arcturus in the observatory. In this sketch, he pictured the resolution spectra that he observed as Umbra for high resolution and Penumbra for low resolution.

This item was about the Sunspot spectra taken by John Evershed, where he discovered that there is a radial outflow of gases in a sunspot. This effect is now known as the "Evershed Effect".