Erratum in No. 100 (October 1883). 
Page 310, line 1, for friction read fiction. 
TIME BY THE TRANSIT INSTRUMENT. 
Cloth, 8vo, 5s., post free. 
A TREATISE ON THE TRANSIT INSTRUMENT, 
By LATIMER CLARK. 
Cloth, 8vo, 2s. 6d. 
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, 
£9 17s. 6d. ; 18 inch, £13 10s. These instruments will be sent on approval if 
desired. 
A. J. FROST, 6 Westminster Chambers, London, S.W. 
Now ready, royal 4to, cloth boards, price. £1. 
FACTOR TABLE FOR THE SIXTH MILLION, 
CONTAINING THE 
LEAST FACTOR OF EVERY NUMBER NOT DIVISIBLE BY 2, 3, or 5, 
BETWEEN 
5,000,000 and 6,000,000. 
By JAMES GLAISHER, F.R.S. 
Uniform with the above, 
FACTOR TABLES FOR THE FOURTH AND FIFTH MILLIONS, 
Price £1. 
Taylor 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 Scale* 
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. 
THE PISCATORIAL ATLAS 
OF THE 
NORTH SEA, ENGLISH AND ST. GEORGE'S CHANNELS. 
By O. T. OLSEN, F.L.S. F.R.G.S., &c, &c. 
Showing at a glance the Fishing Ports, Harbours, Species of Fish (How, Where, 
and When Caught), Boats and Fishing Gear, and other Special Information 
concerning Fish and Fisheries. 
PRICE. 
With Fish coloured £2 12s. 6d. 
With Fish uncoloured £2 2s. Od. 
Taylor and Francis, Red Lion Court, Fleet Street, E.C. 
[ADVERTISEMENTS continued on 3rd page of Cover. 
