13 January 1912
Great progress was made towards a working prototype this evening in spite of the poorly lit Inventorium, and night seems the only time I can work unimpeded by a colicky baby, frenetic boys, and a shrewish wife (forgive me, dear Hattie.) But, O, the look on Hattie’s face as the peas were flung at Frank across the table, and the mashers that missed me and hit her… it was well worth the late start tonight… an extra thirty minutes for a fair tidy-up. My prototype should be done in plenty of time for Burrell’s 18th. Harry will be pleased. Not so sure about Belle.