a 
18310.] 
alloys, in which they have been acted 
upon by sodium, or potassium. As our 
inquiries at present stand, the great ge- 
neral division of natural bodies is into 
matter which is, or may be supposed to 
be, metallic and oxygen; but till the pro- 
blem concerning the nature of nitrogen 
is fully solved, all systematic ariange- 
ments made upon this idea, must be re- 
garded as premature.” 
Mr. Davy, in the course of the lecture, 
noticed an experiment of Dr. Wood- 
house, in which the action of water 
caused the inflammation of a mixture of 
four parts of charcoal, and one of pearl- 
ash, that had been strongly ignited to- 
gether, and the emissicn of ammonia 
from them: in repeating the process, he 
found that by cooling the mixture out of 
the contact of nitrogen, no ammonia was 
\ 
Review of New Musical Publications. 
587 
formed, and infers, that.this substance 
owed its existence to the absorption of 
atmospherical air by the charcoal. 
“Potash,” says he, “or pearl-ash, is 
easily decomposed by the combined at- 
tractions of charcoal and iron; but it is 
not decomposable by charcoal, or, when 
perfectly dry, by iron alone, ‘Two com- 
bustible bodies seem to be required by 
their combined affinities for the effect; 
thus in the experiment with the gun- 
barrel, iron and hydrogen are concerned, 
I consider Homberg’s pyrophorus as a 
tripie compound of potassium, salphur, 
and charcoal, and in the process the pot- 
ash is provably decomposed by two affi- 
nities. The substance is perfectly imi- 
tated, by heating together ten parts of 
charcoal, two. of potassium, and one of 
sulphur. 
REVIEW OF NEW MUSICAL PUBLICATIONS. 
ST 
Monthly Minstrelsy, a periodical Work in twelve 
Numbers, containing short Essays in Poetry and 
Music. Written and composed by T.. D. Wor- 
gan, Author of Rouge et Noir de Musique, or 
Harmonic Pastimes. 1s. 6d. 
F this periodical work we have, as - 
yet, seen but one Number. The 
present is prefaced by thirty-two lines in 
heroic measure, tributary to the fame of 
Lord Nelson, but for which, we are 
afraid, the hero of Aboukir, were he 
living, - would not feel over grateful. 
These lines are succeeded by what Mr. 
W. calls a sonnet; it consists of a suc- 
cession of notes intended tor a melody, 
and applied to “ What bard, O Time, 
discover,” in the Duenna, These, and 
a single page of a sonatina, furnish out 
the Number now lying before us of the 
“ Monthly Minstrelsy.” From .certain 
circumstances within our knowledge, we 
are inclined to think that Mr. T. D. Wor- 
gan is a sonof the late excellent musician 
Dr. Worgan. But these circumstances, 
as our readers will conclude, have no 
connection with the contents of the pages 
we are now contemplating. From them 
we do not pretend that we should ever 
have traced the descent. 
Twelve Rondos in a new Style. . In imitation of 
Waitzes. Composed for the Piano-forte by F. 
Lanza As. 
‘This is the second book of rondos- 
written by Mr. Lanza on the present 
plan. We approve the idea. Whatever 
produces variety, without confounding 
the species, is, in our opinion, eligible 
and praise-worthy. The present pieces 
are rondos in the measure and style of 
waltzes; and they so blend the charace 
ters as not to destroy distinction, or con- 
fute the critical ear. It is but candid to 
add that they possess much evidence of 
taste and fancy, and merit the attention 
of the musical public. 
Favcurite and popular Airs from eminent Fo- 
reign Masters, arranged for two Flageolets 
or Flutes, and inscribed to W. Hunter, esq. 
by F. Parry, Editor of the Welsh Melodies. 
3s 
Thes@ airs are twenty-four in number, 
and form eight divertimentos. ‘They are 
obviously selected with a view to the ac-_ 
-commodation of the tyro on the instru- 
ments for which they are arranged, yet 
are chosen with taste and discernment. 
They will be practiced by almost every 
one with pleasure, and by none without 
Improvement. 
La Chasse et Rondo’ Militaire, avec Accompagne= 
ment de Violon ou Flute, et Basse (ad liti- 
tum.) Composcs et dedies a Melle Feans par 
I. Mugnié. 5s. 
The genius and taste exhibited in this 
publication demand eritical acknow- 
ledgment. Many of the passages are of 
a novel cast, and the general effect is so 
far above mediccrity, as to ensure public 
approbation. The accompaniment is 
arranged with judgment, and the whole 
construction is demonstrative of the real 
master. ie 
gs Biithe 
