The Internet Archive has a preservation copy of this work in our general collections.
every twelve hours, but this is troublesome. Y i^a strip of ledger paper thirty inches long, marked to show the days of the week and hours of the day. S is a small electro-magnet taken from a physiological time-marker, witli a spring stylus, having an ink trough at H and soldered to the spring armature. S is supported on an adjustable device, V T. E is a switch, convenient but not necessary. To attach to the anemometer, remove the cyclometer crystal and drill a hole, by means of a file anddoi:10.1111/j.1949-8594.1904.tb05385.x fatcat:xu44ndwktfebfbjfcmiefasd6e