Ne i ¢ ENGRAVINGS, Heady 
ie “Vol. XXKXVII. Plates 1 and 2, Representations of Trininous Animals, to 
illustrate Mr. Macartney’ s Paper on that Subject.— Quarto Plate of the Orbits 
- of the newly discovered Planets, —A Quarto Plate to illustrate M. Peyrarb’s 
t » Paper « on Burning Mirrors.—A Plate to illustrate Mr. Donovan's Paper 
on Electro-chemical Agency.—Mr. Accum’s New Mineralogical Apparatus. 
Se _—Mr. Lee's Thrashing Machine.—Mr. Coox’s Apparatus for making Gas 
a and other Products from Pit-Coal ; and Mr. Way’s Method of procuring 
_ ‘Turpentine from Fiz-Trees.—A Flate to | illustrate Dr. Buzwster’s Paper 
K on the Power of the Lever. ~ 
has * Vol. XXXVIIL. ‘Mr. Donkin’ PT cater ne WE Ay est 3 Mathematical | 
A ye Engine —A 4to Plate of Mr. Lorscuman’s Patent Piano-Forte, 
_ and Mr, Lisron’s Patent Eubarmonic Organ.—A Plate to illustrate Mr. 
_ Havy’s Paper on the Electricity of Minerals.—Mr. Watxer’s improved — 
pWhiccouicter.—M r. Moutr’s Filte: ing Apparatus. —Mr.Smira’s Method of 
i relieving a Horse fallen in the Shafts of a loaded Cart.—Mr. Joun Taytor’s 
* 
“aay hasabalagl for Mines. —A Representation of the Comet now visible in 
- Ursa Major.—Sir Howarp Doucxas’s Patent Reflecting Semicircle.— 
- Acoloured Map to illustrate Dr. Campgzext’s Paper on the inferior Strata 
of the Earth occurring in Lancashire.—Mr. Sapuer’s Apparatus for — 
a of Lead.—A Plate to illustrate My. Wirenaw SaenS s ae es % 
Raval: XXXIX, Mr. Sracvens’ s a SopellingsSiaths aa rss pcre 
the Great Derbyshire Denudation.—A Quarto Plate to illustrate the Opti~ — 
at Instrument called the Diacatoptron.— A Plate of Mr. Steevens’ s 
~ Contrivance for freeing Water-pipes from Air: engraved by Mr. PorTER.— _ 
Be Bas. Atvan’s improved Reflecting Circle—Mr. Woon’s inclosed Grind- 
cj -. for Pointing Needles, and Mr. Wenster's Method of carrying off 
Steam from Boilers—Mr. Brunton’s improved Pump for raising Water 
ie Shafts or Pits are sinking—Mr. Hopgson’s improved ‘Mariner’: s 
mpass for correcting the Magnetic Variations.—A. Quarto coloured Plate 
‘illustrate the Geology of Part ofthe Vicinity of Dublin. ae 
ol. XL. A Plate to ‘illustrate the Foundation of Mr. Witt1am Jowrs's ee 
rary Corn Rick. —Mr.. Srevuens’s Method of dividing Bricks,— 
ction of Mr. Witiram Jones's temporary Corn Rick.—Mr. Watsreny’ She & 
New Tira ‘on the Acorn Dibble.— A Plate to illustrate Mc. Tawney's 
of ‘Snakes, —Figures to illustrate such Portions of a Sphere as 
Attraction expressed by an algebraic Quantity.—Van_ Heimo i 
ential Thermometer.—Formationof: Ovals for Gardeners.~-Cus a 
e Transit—A Plate to illustrate Mr. Bropie’s Experi 
nfluence of the Brain on the Generation of Animal Heat. 
scopic Camera Obscura io licroseope.—Count Rumrorn'’s improved 
n Accuracy and. Dispatch. —Mr. ‘Davis's s hanging Scaffold; and_ 
Maxtin's Baton 3 of relieving a Horse from a Cart when "fallen 
wn in its Shafts— A Quarto Plate to illustrate Mr. J. Hiexs’ ’s Ac. 
nt of the Situation and Means of raising the Royal George—-A_ Plate 
ya Blocks, &e. and on the Polygon of Forces.--A Plate te illustrate — ; 
ws’s Accot a Meteor seen at en ane other Places in 
te des illustra Mr. Mac youre 
lew Thrashing Machine.—T wo Octavo Plates descriptive of a New. Ma- — gs 
chine for Pumping Water.—T wo Fates descriptive of the Muscular Mo- yED 
im ts on me ‘ 
Vol. XLI. Pepys’s hha Voltaic Conductor.—Lesire’s s Dit. ie ee 
il ‘Thermometer. eo ie to illustrate Dr. Wottasvon’s Peri- 
Coliee- -pots.—Mr, Goss’s Instrument to work Addition of Numbers ,. ie 
justrate Mr, Souruern’s Essay on the Equilibrium of a Combination 5 
