A handbook of double stars, with a catalogue of twelve hundred double stars and extensive lists of measures. With additional notes bringing the measures up to 1879 (1879)
DOUBLE STARS. 30 copper well painted. The conical form of roof is very effective, and also very cheap. The Transit Instrument will require a small room, say 12 feet square, or rather less. A Computing Room, on the north side of the Observatory, may be added, and this may be provided with a stove… … MR. EDWARD CROSSLLY S OlSLRVATORY, DERMLRSIDE weather. The hot water must of course be turned oft some time before the work of observation begins. Four windows, north, east, south, and west, are of great use in ventilating the Observatory, and in rapidly reducing the temperature inside as nearly as…
