| Description | Hourly observations, followed by readings taken at various intervals during the hour, to as little as ten minutes, from 18.00hrs on 20 June, to 21.00hrs on 23 June. Columns for date and time, barometer in millimeters, attached and detached thermometers in centigrade, Augustes psychometer Reamur's scale showing dry bulb and wet bulb, an underground thermometer in fahrenheit scale, with general remarks on the weather.
Headed [p.1]: 'Meteorological Observations made at Potopoto, near the City of La Paz in Bolivia at the Winter Solstice of 1838...'. Signed and dated [p.3]: 'Potopoto June 24 1838 J.B. Pentland'. Endorsed [p.4]: 'Meteorological Observations made at Potopoto near La Paz Lat 16 degrees 30' 4" S at the Winter Solstice of 1838'. |