Se 
258 
jn others diffused throughout the animal’s 
body, The lightis differently regulated 
when the lumimous matter exists in the 
living body, and when it is abstracted 
from it. In the first case it is inter- 
mitting with periods of darkness, is com- 
monly produced or increased by a mus- 
cular effort, and is sometimes absolutely 
dependent upon the will of the animal, 
Tn the second case, the luminous appear- 
ance isusually permanent, until it becomes 
extinct, after which it may be restored 
directly by friction, concussion, and the 
application of warmth, which last causes 
operate on the Juminous matter only in- 
directly by exciting the animal. The 
Juminous matter, in all situations, is in- 
combustible, and loses the quality of 
emitting light by being dried, or much 
heated. The exhibition of light, how- 
ever tong it may be continued, causes no 
diminution of the bulk of the luminous 
matter. It does not require the pre- 
sence of pure air, and is not extinguished 
by other gases. The luminous appear- 
ance of living animals is not exhausted 
List of New Publications. 
[April I 
by long continuance, or frequent repe- 
titions, nor accumulated by exposure to 
natural light: it is therefore not de- 
pendent upon any foreign source, but in- 
heres asa property, in a peculiarly or- 
ganized animal substance, or fluid, aad 
is regulated by the same laws which 
govern all other functions of living be~ 
ings., The light of the sea is always 
‘produced by living animals, and most 
frequently by the presence of the inedusa 
-gcintillans. | When great numbers of this 
species approach the surface, they some- 
times coalesce, and cause that snowy 
or milky appearance of the sea, which is 
so alarming to navigators. These anle 
mals, whea congregated on the surface 
of the water, can produce a flash of light 
like an electric corruscation. The lu- 
minous property does not appear to have - 
any connection with the economy of 
the animals that possess it, except in 
flying insects, which by that means dis- 
cover each other at night, for the pure 
pose of sexual congrese, 
——— 
NEW PUBLICATIONS IN MARCH. 
— 
9.4 As the List of New Publications, contained in the Monthly Magazine, is the 
* 
“ONLY COMP 
LETE LIST PUBLISHED, and consequently the only one 
- that can be useful to the Public for Purposes of general Reference, it is requesteg 
that Authors and Publishers will continue 10 communicate Notices of their Works 
(Post paid,) and they will alaays be faithfully inserted, FREE of EXPENSE. 
—=—— : 
AGRICULTURE. 
GENERAL View of the Agriculture of 
‘F Durham. By J. Bailey. 8vo. 14s. 
General View of the Agriculture of Wilt- 
shire. By T. Davis. 8vo.. 9s. 
General View of the Agriculture of Cam- 
bridgeshire. By the Rev. W. Gooch. 
Svo. 9s. 
Letters and Papers on Agriculture, selected 
from the Correspondence of the Bath and 
West of England Society. Vol. XII. 8vo. 9s, 
General View of the Agriculture of Hun- 
tingdonshire. By R. Parkinson. &vo. Qs. 
General View of the Agriculture of Wor- 
cestershire., Svo, 10s. 6d. 
General View of the Agriculture of Kin- 
_cardineshire. By,G. Robertson. 8yo. 10s. 6d. 
General View of the Agriculture of Gale 
loway. By the Rev. S. Smith. 8yo. 9s. se 
ARTS, FINE, 
A Letter to Martin Archer Shee,. esq. 
R.A. detailing a Plan for the more certain 
Improvement of the Arts of Painting, Sculp- 
gure, and Architecture, By Philotechnes. 3s, 
A Series of Progressive Lessons on the Art 
ef Painting in Water Colours. 1]. 1s. 
Chalcographia, or the Art of imitating 
Chalk, Black-lead Percil, and Pen and Ink, 
Drawings. By J. Hassel. 4to, 15s. ws 
Architectural Antiquities of Wales. By 
C. Norris, esq. No. 11]. F 
Fine Arts of e English School. By John 
ritton, esq. No. III, 1). 1s. 
468 q large paper 
Architectural Antiquities of Great Britain. 
By John Britton, esq. No. XXIII. 10s. 6d. 
large paper 16s. : 
Inducements to promote the Fine Arts in 
Great Britain. By J. Cranch. 4to. 2s. 6d. 
Treatise on the Ecclesiastical Architecture 
of England. By John Milner, D.D. F.S.A. 
royal 8vo, 15s. ae ; 
BIOGRAPHY, 
The Life of Sir Michael Forster, knight 
‘some time one of the Judges cf the Court of 
King’s Bench, and Recorder of Bristol. By 
his Nephew, the late Michael Dodson, esq 
barrister. 4s. iia 
BOTANY. 
La - Botanique, historique et litteraire 
Par Mad, de Genlis. 2 vols. 12mo. 10s. - 
CLAssICg 
‘ 
