37 12 March. Off 10·9a. OK except that paper began running up at 7.28 a.m. Heavy shock of some kind recorded by N-S component coming from N. and beginning at 2:49 p.m. 11 inch (cor. section being made for the hour mark coming at 3 min. past the actual hour, due to error made when clock was set on 10 March.) and continu- ing till about 2.52.30 p.m. Some doubt regarding the record is raised in my mind by the apparent continui- ity of the regular needle trace through the maze area. This will be settled when I submit the record, which I have collodionized, to Fr. Zondoff. Preliminary and subsequent he- mors are missing from the record, seeming to show a lack of sensitivity in the apparatus, if this was a true earthquake shock. The record would indicate the occurrence of a heavy quake somewhere in the region from Japan to Sumatra, or a lighter quake further north MacMillan tells me that by his observation the Bond chronometer was 10 min. 41.3 sec fast on 28.II and gaining 2 seconds per day.