April 12, 1862
In reply to your telegraphic message of first instant, reporting loss of thermometers, I am sorry to say I have neither instruments on hand nor funds to replace them. Neither would it be safe to put a new set in a position which they are liable to be stolen. The barometer should be kept indoors as it is not necessary that it should be in the open air.
Could you make any arrangement whereby the thermometers could be kept in a more secure position and at the same time exposed freely to the air and protected from the direct and reflected heat of the sun? If so I might perhaps be able to procure some new instruments.
I am sir
Your obedient servant
Please continue barometer and other observations as before.