Dionysius Lardner to Faraday   23 January 1835

Paris. 23 Jany 1835

My Dear Faraday. I received yours of the 10th but had previously written to you¹. If you con‑fine the comets to one evening let it be the 6th and say "Notice of Halley's Comet". If you extend it to two evenings say - "Notice of the most remarkable comets especially those whose return will take place in 1835"².

The people here have made many and kind enquiries after you. Biot especially says he would give much to have you for a few hours with him. He thinks he has made an important discovery respecting the application of circular polarisation to chemical investigations³. He has also shewn me some very extraordinary experiments on radiant heat which throw Leslie's altogether into the shade⁴. I hope to exhibit them at the next meeting of the association⁵.

Immense improvements have been lately made in the observatory which Arago has shewn me and which, when the second circle is finished, will make it a more efficient thing than Greenwich.

I shall (D.V.) be in London on Monday 2nd Feby.

ever yours faithfully | Dion: Lardner