ENGRAVINGS. *. 
; 4 Jol. LILI. A Plate illustrative of Dr. Ure's Experiments on Galoric, 
. Lucxcocx’s Paper on the Atomic Philosophy, and Mr. Botron’s 
the Purification of Coal Gas.—A Plate representing Mr. Renwnie’s 
d the Marquis Rip6trxi’s Improvement on. the Gas Blow-pipe—A 
ate illustrative of Mr. Merxxe’s Paper on Calorific Radiation; Mr, 
We’s on the Purification of Coal Gas; and Mr. Hucues’s on ascer- 
Mming Distances. — A Plate illustrative of Dr. Orinruus Grecory’s 
Maper on the different Rates of Pennincton’s Astronomical Clock at the 
ind of Balta, and at Woolwich Common, : : 
fol. LIV. A Plate illustrative of the Mena: Baipce.—A Plate illus- 
tive of Mr. Lowe’s Description of a Mercurial Pendulum.—A Plate 
trative of Mr. Hare’s Calorimotor,a new Galvanic Instrument.—A 
ite illustrative of Captain Sasine’s Paper on Irregularities observed in 
Me late Voyage of Discovery; and Mr. Scorgssy’s Anomaly in the Va- 
ion of the Magnetic Needle as observed on Ship-board. 
Jol. LV. A Plate exhibiting Sketch of the Comet’s Path of July 1819, 
A Plate illustrative of the Annular Eclipse of the Sun onthe 7th of 
tember next.—A Plate illustrative of Mr. Lanx’s Instrument for 
ering Fruit; Mr. Younc’s Mode oi preparing Opium from the 
baver somniferum; and of Captain Forman’s Essay on a Property in 
rht which hitherto has been unobserved by Philosophers,—A Plate de- 
iptive of Mr, CuruBert’s improved Hydro-pneumatic Apparatus, &c, 
i Plate illustrative of Capt. Forman’s Essay on the Reflection, Refrac- 
, and Inflection of Light, &c.; and Mr. Cuarirs Bonnycastue’s 
Ps Compass, 
logy of Botany»—A. Plate illustrative of Mr. Haxu’s Percussion Gun- 
ock; of Dr. Kircuiner’s Pancratic Eye-Tube; and of Mr. Parx’s 
doring Blocks.—A Plate exhibiting Sections, &c.of Mr, Maram’s im- 
bved Gas-Meter.— 
URRY in the Polar Sea. . 
Vor. LVII. A Plate illustrative of Mess. CExsrep and Ampere’s 
essibility of Water.—A Plate illustrative of Mr. Jamizson’s Marine 
ermometer Case, and Mr. Jenninas’s Mercurial Log-Glass.—A Plate 
ustrative of Dr. Hare’s new Modification of Galvanic Apparatus.—A 
ate representing a Double Canal Lock, originally proposed for the Re- 
ent’s Canal, by Mr. R. H. Gower; and a Modification of Electro-Mag- 
fic Apparatus, by Mr. Tatum. 
: Annular Eclipse of the Sun, which will happen on the 15th of May 
36.—A. Plate descriptive of the Hydrostatic Balances of Isa1au 
yxens and Dr. Coates.,—A Plate illustrative of “ An Introduction to 
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actometer, and of Mr, Joun Murgay’s portable Apparatus for restore 
g the Action of the Lungs =, % 
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Vol. LVIII. A Plate illustrative of Mr. Geo. Inyrs’s Calculations of 
aratus employed in his Experiments on the Strength of Materials; — 
@ Direction of the Compass Needles of the Isabella and Alexander in - 
oa 
Mmunicacion respecting the Influence of Masses of Iron on the Marie _ 
Vol. LYT. A Plate illustrative of Mrs. Isserson’s Paper on the Phy. | 
A Plate exhibiting the Discoveries made by Capt. . 
ctro-magnetic Experiments, and Mr. Perxins’s Paper on the Com, — 
Knowledge of Funguses.””—A Plate illustrative of Professor Davy's. 
