1808.] 
Mr. Wiiiiam Peruer, of St. Michael’s 
Hill, Bristol, states that he has completed 
his new Antifuliginous System, intended 
to purify the air over iarge towns and 
cities, by diminishing the quantity of 
smoke, by preventing “smoky houses, and 
concentrating a more lasting heat, 
Mr. L. Conen, has in the press, a 
splendid edition of a controversial work, 
entitled, Sacred Truths, addressed to the 
children of Israel, residing in the British 
empire; shewing that the Jews can gain 
nothing by altering their present belief, 
proving the local restoration to the Land 
of Promise, but clearly demonstrating 
that Bonaparte is not the promised Mes- 
siah, 
Mr. Biarer announces, a Letrer to Dr. 
Jenner on the supposed Failures of Vac- 
ciation at Ringwood; including a Re- 
port of the Royal Jennerian Society en 
that Subject, after a careful Public In- 
vestigation upon the Spot.—sSee the Pro- 
ceedings of Public Societres. 
Mr. Grorce Coorrr, of Wimpole- 
street, has published his first number’ of 
Architectural Retiques, consisting of se- 
veral views, &c. of Llandaif Cathedral ; 
and early in April will appear his second 
number, containing views, &c. of Tyntern 
Abbey, Monmouthshire; the whole of 
the plates from drawings taken on the 
spot by lumself, Vhe w ork will be con- 
tinued in numbers, accompanied by !etter- 
press illustrations. 
The son of Mr. Becxwiru, the late 
editor of Blount’s Fragmenta. Antiqui- 
tatis, or Antient Tenures of Laud, and 
Customs of Manors, 1s now prepaline 
for the press, a mew edition of that. work, 
greatly enlarged. 
A subscription nas been opened for 
the purpose of erecting a monument to 
the memory of the Rev. Thomas Jones, 
Jate fellow and tutor of Prinity College, 
Cambridge. The amount of each per- 
son’s subscription i is not to exceed two 
guineas. : 
Mr. Srurces has in the press Critical 
Situations on the Game of Draughts. 
Dr. Cuartes Burney is proceeding 
with his New Metrical Division of the 
Choral Odes of A'schylus, and has also 
made considerable progress in an abridg- 
ment of Bishop Wilson’s excellent work 
on the Creed, for the use of the upper 
forms in schools. 
Mr. Kipp is preparing for ‘the Cam- 
bridge press, a new edition of Davis’s 
Mis seo aues Critica. 
Mrs. Sewe.x is preparing a third vo- 
Jume of Puems and Ess says, to be pub- 
lished by subscription, 
Literary and Philosophical beiciias gence. 
-erater at the time of the explosion. 
243 
The Rev. Mr. Hitz, of Homerton, 1s 
preparing for the press Animadversions 
on the Rev. W. Parry’s Strictures on the 
Origin of Moral Evil, &c.; with an Appen- 
dix, containing Strictures on the Rev. W. 
Bennet’s Remarks on a recent Hypothesis 
respecting the Origin of Moral Evil, ae. 
Mr. Donrevan has announced teins 
particulars of an extraordinary neture 
respecting one of the mountains of Wales, 
which he endeavours to demonstrate te 
have been at some remote period ¢ a Vole 
cano of immense magnitude. This is 
Cader Idris in Merionethshire, which in 
size is not exceeded by any mountain 
in the Principality, except Snewdon, 
The general aspect of the crater is ex- 
actly that of Mount Vesuvius, only one 
of its sides is broken down, so that the 
abyss of this funnel-shaped mountain is 
more completely disclosed than in the 
latter. It is this side of Cader Idris that 
affords the most illustrative examples 
of porous stones, which form immense 
beds on the declivities, only a few inches 
in many instances below the surface ofthe 
earth. Many of these porous stones exhibit 
evident marks of strong ignition and vitrifi- 
cation; some are reduced to the state of 
slags, while others have all the cellular 
appearance and lightness of pumice. 
‘The summit of the mountain is covered 
with an immense wreck of stones, sup~ 
posed to have been ejected from the 
My- 
riads of these stones have borne a regue 
lar erystailized form; their usual length 
is, from three to six and ten feet; some 
nieasure even fifteen or twenty, and one, 
Earley, which Mr. Donovan ob- 
served, was twenty-two feet three inches 
long. The substance of these crystals is 
of the basalt kind, being che porphyry 
slate, or clinkstone porphyry of Jamieson. 
Dr. Joserpu Reape, of Edinburgh, 
has invented a calorimeter which is free 
from the inaccuracies incident to the 
apparatus of Messrs. Lavoisier and La- 
place, in whichit was impossible to guard 
against errors arising from cvpillary at- 
traction, from the process of freezing and 
thawing proceedina at the same period, 
and likewise from the influence of a cur- 
rent of atmospheric air, From experi- 
ments made with this instrument, the ir 
ventor deduces a discovery, which, is 
confirmed, must influence in a most 1m- 
portant manner the investigations of c= 
loric; that, contrary to received opinion, 
water increases in capacity from the 
thermometric raiige of 32 to 212, Ina 
just rate for every degree of temperature 
communicated, 
Tir. 
