JH's letter is curious regarding the planetary nebulae. Intended to ride over this morning but the heat was too great. Encloses estimate for printing the observations; comments on this. Would like to send it to Francis Beaufort on Tuesday. Returns some papers and journals. C. P. Smyth will call today.

Discusses printing costs. Heard that Halley's Comet was seen with the naked eye in Cape Town; JH is excited about his own prospects of seeing the comet.