Now ready, demy 8vo, Vol. L, price 21s. 
A TREATISE 
ON 
ELECTRICITY AND MAGNETISM. 
(GENERAL PHENOMENA AND THEORY.) 
By E. MASCART, 
Professor in the College de France, and Director of the Central 
Meteorological Bureau, 
and 
J. JOUBERT, Professor in the College Rollin. 
Translated by E. ATKINSON, Ph.D., F.C.S., 
Professor of Experimental Science in the Staff College. 
Thomas De La Rue and Co., London, E.C. 
TIME BY THE TRANSIT INSTRUMENT. 
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A TREATISE ON THE TRANSIT INSTRUMENT, 
By LATIMER CLARK. 
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TRANSIT TABLES, 
Published annually ; giving the Transit of twenty of the principal Stars for every 
Evening in the year. Computed from the Nautical Almanac in ordinary time. 
Intended for Popular use in every part of the Globe. 
By LATIMER CLARK. 
TRANSIT INSTRUMENT 
of Improved Form and of the Highest Quality, complete with Lamp &c. 12 inch, 
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d&^irGcL 
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FACTOR TABLE FOR THE FIFTH MILLION, 
CONTAINING THE 
LEAST FACTOR OF EVERY NUMBER NOT DIVISIBLE BY 2, 3, or 5, 
BETWEEN 
4,000,000 and 5,000,000. 
By JAMES GLAISHER, F.R.S. 
Uniform with the above, 
FACTOR TABLE FOR THE FOURTH MILLION, 
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Taylob and Fbancis, Red Lion Court, Fleet Street, E.C. 
New Edition, price Is. 
TABLE OF CORRECTIONS FOR TEMPERATURE 
to Reduce Observations to 32° Fahrenheit for Barometers, with Brass Scales 
extending from the Cistern to the top of the Mercurial Column. 
By JAMES GLAISHER, F.R.S. 
Taylor and Francis, Red Lion Court, Fleet Street, E.C. 
[ADVERTISEMENTS continued on 3rd page of Cover. 
