Columbia University Computing History   

MNRAS Scans

Scans of plates in L.J. Comrie articles from MNRAS 1928 and 1932. Click on thumbnail to get full-size 200 ppi image, which can be anywhere from 250K to 1MB. The punch-card machines are British 45-column round-hole models (the 1932 article [3] describes work that was done in 1927-28, just before the 80-column card was introduced).

	Nova Brunsviga [1].
	Brunsviga Dupla [1].
	Burroughs Class II [2].
	Burroughs Class II keyboard [2].
	45-column round-hole punched Hollerith cards [3].
	Punch-card machines: Type 001 Hand Key-Punch; Type 016 Electric Duplicating Punch, Sorter [3].
	Hollerith Type III Tabulator [3].
	Printing Mechanism [3].

References:

1. Comrie, L.J., "On the Application of the Brunsviga-Dupla Calculating Machine to Double Summation with Finite Differences", Monthly Notices of the Royal Astronomical Society (MNRAS), Vol.88, pp.447-459 (1928).
2. Comrie, L.J., "The Nautical Almanac Office Burroughs Machine", Monthly Notices of the Royal Astronomical Society, Vol.92, No.6, pp.523-541 (1932).
3. Comrie, L.J., "The application of the Hollerith Tabulating Machine to Brown's Tables of the Moon", Monthly Notices of the Royal Astronomical Society, Vol.92, No.7, pp.694-707 (1932).

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Frank da Cruz / fdc@columbia.edu / Columbia University Computing History / Sep 2003