My dear Henry
I send you the last part of our Polytechnic Report which has been sent to me to correct. I send it because it gives a slight account of an application of your invention, which you may not have heard of – I have seen the instrument at work & I am sure it would please you to observe its extreme delicacy in noting the changes of a summers day.<1>
I wish you would attend our next annual meeting.
Do not me at 7 ˝ on Saturday, & send me back the report as soon as you can.
46 Charles Stbr>May [10?]
1. Not enclosed. See Thomas Brown Jordan, “On a New Mode of Registering the Indications of Meteorological Instruments”, Reports of the Royal Cornwall Polytechnic Society, v. 6, 1838, pp. 184–189.