John Peter Gassiot to Faraday   30 January 1858

Saturday | 10 oClock.

My dear Faraday,

After you left I made the following experiment¹:

A No 5 Tube

b, b’ 2 Clips attached to E

E D[ou]ble leaf Electroscope

Whether the clips were as in figure or separated to their fullest extent or nearly in contact the leaves of the Electroscope always repelled, shewing that at no time were there signs of opposite states of Electricity on the Tube.

When Wheatstone saw the Experiment in this (or a similar tube) he considered the striae as mere cases of induction, alternating + & -, if the experiment is correct this cannot be the case - at all events I give you the fact as I observed it,

Believe me | truly yours | J.P. Gassiot

Dr Faraday

Endorsed by Faraday: 30 Jany 1858