This Day is published, Price 33, 6d. Sewed, . : 
HE SEAT of VISION Determined; and, by the Discovery Of anew | 
Function in the Organ, a Foundation laid tor explaining its Mecha- 
nism, and the various ’hanomena, on Principles hitherto unattempted. 
Py ANDREW HORN. 
London: Printed for Gale, Curtis, and Fenner, Paternoster-Row. 
ANTLATTRITION. 
HE Public derive the following most extracrdinay advantages by the 
vse of THE PATENT ANTI-ATTRITION COMPOSITION: 
For instance, to work a Steam Engine of Fifty Horse Power, with Tallow, 
it requires in packing the Piston at least Twelve Shillings worth, after which 
it will require the same quantity every Twelve Flours till the Engine is fresh 
pack’d, which it must be «t the end of six weeks, if the work is heavy and 
continued twelve hours each day; consequently beside the Cost of Oil, 
Packing, Labou’, Loss of Time, Wear and Tear, the Zxpeuse wiil exceed 
Twenty-two Pounds. 
‘The same Engine, to perform the same work, will require to pack the 
Piston, Eight Guineas worth of the Composition, with which it will work 
cool and well, for upwards of a Quarter of a Year, without either Tallow, 
Oil, or any kind of Grease, and without eny other Application than about 
Two Shillings worth of the Composition daily: therefore the Expense of 
working | bree Months with tle Composition will not exceed Fifteen Pounds 
Twelve Shillings; whereas, to work with Tallow, the Expense in that Arts 
cle only, will exceed Forty-‘our Pounds. And the Public have still greater 
Advantages, by using the Composition to the Rigging of Ships, instead of 
© Tar, Parceline, and Service; to Cables, instead of a Piat, Service, or 
Rounding ; to preserve Wood and wooden Buildings from the Weather, 
Worm, and Dry-Rot; to Mills, Machinery, Carriages, Coaches, Carts and 
Wagons ; and if applied to Ships’ Bottoms, instead of Copper, 250/. worth 
of it is equal to 1700/. worth of that Article; and it also saves Fuel in 
working Steam !ngines, and renders them perfectly Steam Tight. 
Sold, Wholesale and Retail, for the Patentees, at 40, Charing-Cross, near 
the Admiralty, London ; and, by their Appointment, at most Ship-Chand- 
lers, Printers, Booksellers, Libraries, Stationers, Druggists, Medicine Ware- 
houses, Perfumers, [ronmongers, Cutlers, Coachmakeis, Innkeepers, Coach 
and VV agen Offices, Oil and Colour Shops, Sadlers, and Shop-keepers, in 
the United Kingdom, in Boxes, Price 2s. €d.5 5s. 6d.; 108, Od. One 
Guinea and Two Guineas each. 
The smallest size Box contains a Quantity sufficient to prime a Four- / 
wheeled Carriage four times, with which it will run upwards of Six Thou- 
sand Miles, without applying any thing else to the Axletrees, and one Half-| 
Guinea Box contains a sufficient Quantity for a Stage Waggon to travel 
33,000 Miles, and it will work with Wood Axletrees, or with cemmon Boxes 
and Axletrees of any kind.—The most satisfactory Proofs of ‘he Merits of 
the Composition may be seen at the Patentees’ Office, No, 40, Charing-Cross. 
Directions are given with each Box, which are signed W. LD). Bertamy. 
ENGRAVINGS. 
Vol XXXVI. Plates 3 and 2, Representations of Luminous Animals, to 
illustrate Mr. Macartney’s Paper on that Subject —Quarto Plate of the Orbits 
ofthe newly discovered i'lanets.—A. Quarto Plate to illustrate M. Peyrarn’s 
Paner on Burning Mirrors—A Paceto illustrate Mr. Donovan's Paper 
on Electro-chemical Agency —Mr. Accum’s New Mineralogical Apparatut, 
—Mr. Leet’s L'hrashing Machine.—Mr, Cook’s Apparatus for making Gas 
