clearer than I ever remember to have seen it, the constellations brilliant, and the Milky Way like a bright auroral streamer.
The wind has continued all day, making it unpleasant out of doors. I went for a walk over the land; it was dark, the rock very black, very little snow lying; old footprints in the soft, sandy soil were filled with snow, showing quite white on a black ground. Have been digging away at food statistics.
Simpson has just given us a discourse, in the ordinary lectures series, on his instruments. Having already described these instruments, there is little to comment upon; he is excellently lucid in his explanations.
As an analogy to the attempt to make a scientific observation when the condition under consideration is affected by the means employed, he rather quaintly cited the impossibility of discovering the length of trousers by bending over to see!
The following are the instruments described:
| Features | ||
| The outside (bimetallic) thermograph. | ||
| The inside thermograph (alcohol) | Alcohol in spiral, small lead pipe—float vessel. | |
| The electrically recording anemometer | Cam device with contact on wheel; slowing arrangement, inertia of wheel. | |
| The Dynes anemometer | . | Parabola on immersed float. |
| The recording wind vane | . | Metallic pen. |
