Left Prestwick at 7.30. Rennie was fast asleep + I didn’t waken him. There was a strong NW to N wind which was in my favour. At Sorn it began to rain + continued to Greenock Water1. My left leg was quite wet. After Mairkirk2 the sun came out but it was very cold & my hands got renumbed. On Thankerton Moor thin rain + heavy hail showers + a few flakes of snow + I could see a white powdering on Culter Fell3. I stopped for a smoke after Muirkirk + took off my cape + at Douglas I had some biscuits, cheese and beer. I was very ready for tea at Peebles + thoroughly enjoyed it but my hands were never really warm till Innerleithen. I got back at 7 having ridden 91.5 miles. I felt the effects more than I did on Monday.
1 Dr Muir has tracked the River Ayr (not always closely) east from Sorn and would have crossed the Greenock Water at grid reference NGR NS630,272 a few miles before reaching Muirkirk
2 Dr Muir’s ‘Mairkirk’ – Muirkirk – is similar to the local pronunciation and may well be a conscious attempt to capture the sound
3 In the Southern Uplands at grid reference NGR NT052,290; the highest point in South Lanarkshire, between Coulter, across the River Clyde from Symington, South Lanarkshire, and Tweedsmuir, Peeblesshire

[Source: Scottish Borders Archives & Local History Service SBA/657/22, Dr J S Muir of Selkirk, medical practitioner, journal for 1919]