Monday
My dear Hooker,
I have devoured your notes2 in the intervals of my soup. You have certainly opened my eyes on many points. What you have said regarding the ancient glaciers quite determines me to give the speculation up—I shall merely shew how the radiation phenomena may come into play by the deflection upwards of moist winds by mountains masses.
I was amazingly struck by your speculation on hail, but the whole thing is full of ‘wrinkles’, and I am extremely obliged to you for the trouble you have so kindly taken.
Yours ever & always | John Tyndall
RI MS JT/1/T/1024
Please cite as “Tyndall1942,” in Ɛpsilon: The John Tyndall Collection accessed on