Copy letter from Archibald Geikie to Dr [Charles] Chree 'Dear Dr Chree, Just a line to thank you for your note of 28th with the type written date. The two originals curves to which you refer were sent by the last week, together with the two tracings, to Dr Glazebrook. So that he will have the whole unbroken [lens] to look at.' 30 March 1908