Letter from John Dalton to Respected Friend [Peter Crosthwaithe?]

Sending journal and a thermometer with instructions for testing accuracy. Thanking for observations made but thinks barometers are inaccurate. Suggests method of correcting for short scale. Thinks rain gauge may not be level. Suggests article on museum be published under Crosthwaithe's own name rather than a pseudonym. References made to J Gough and "Walker".