During a drunken party to celebrate the end of the surveying, the northern observatory was accidentally burned to the ground, taking with it a fiddle belonging to Duncan Robertson, a junior member of the surveying team. In gratitude for the entertainment Robertson's playing had provided Maskelyne during the four months of astronomical observations, he compensated him by replacing the lost violin with one that is now called The Yellow London Lady.
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Davies, R.D. (1985). "A Commemoration of Maskelyne at Schiehallion". Quarterly Journal of the Royal Astronomical Society. 26 (3): 289–294. Bibcode:1985QJRAS..26..289D.