Thermometrical barometer mb-width 3334 London holding umbrellas 15th March

London holding umbrellas 15th March 1965

looking out through the window with two year old chimpanzee Toby

and having tea

King George and family using a pony trap to avoid the use of petrol

Hawthorn coming first in a Maserati and Schell coming second in a Vanwall

Thermometrical barometer mb-width 3334 London holding umbrellas 15th MarchPlate 7 from the paper 'Description of a thermometrical barometer for measuring altitudes' by Francis John Hyde Wollaston, Philosophical Transactions of the Royal Society, vol. 107 (1817), pp. 183 196. The figures show the fully assembled instrument (figure 7) with details of components including the thermometer and a Vernier scale. Original: ink on paper. 1817