392 Notices respecting New Books. 
Umlellifere@, &c. in which the saliant angles of the stall 
are formed by these fibres. 
I am convinced from a variety of reasons, that these fi. 
bres are the vessels of the plants which conduct the sap. 
The following are some of their arguments. 
1. When we cut a branch of a tree in a rainy season, 
the sap issues from the places where there are many fibres: 
i.e. from the interior bark, and from the external wood. 
It neither issues from the externa! bark where the’cellular 
texture is in abundance, nor from the interior wood where 
the trachee are in abundance. It is therefore probable 
that these are the fibres which farnish the sap. 
2. Wheu we cnt a plant in order to examine the cut 
place instantly, we see the orifices of the trachez very di- 
stinctly, but we see them dry: the sap issues, on the con- 
trary, from the fasciculi which surround and accompany 
the trachea, and which are composed of fibres. 
{To be continued. ] 
a — — 
5 LXIV. Notices respecting New Books. 
‘Des Second Part of the Philosophical Transactions for 
1813 has appeared; the following are its contents ° 
19. An Account of some organic Remains found near 
Brentford, Middlesex. By the late Mr. William Kirby 
Trimmer. Communicated in a Letter from Mr. James R. 
Trimmer tothe Rt. Hon.Sir Joseph Banks, Bart. K.B.P.R.S. 
—20. On a new Construction of a Condenser and Air- 
pump. By the Rev. Gilbert Austin. In a Letter to Sir 
Humphry Davy, LL.D.F.R.S.—2i. On the Formation of 
Fat in the intestines of living Avimals. By Sir Everard 
Home, Bart. Presented by the Society for promoting the 
Knowledge of Avimal Chemistry.—22. On the colouring 
Matter of the black Bronchial Glands, and ofthe black spots 
of the Lungs. By Gcorge Pearson, M.D. F.R.S —23. 
Experiments on the Alcohol of Salpliur, or Sulphuret of 
Carbon. Baas J. Berzelius, M.D. F.R.S. Professor of Che- 
mistry at Stockholm; and Alexander Marcet, M.D.F.R.S. 
one of the Physicians to Guy’s Hospital,—e24. On the Means 
of procuring a steady Light tn Coal Mines without the Dan- 
ger of Explosion. By William Reid Clanny, M.D. of 
Sunderland. Communicated by William Allen, Esq. F.R.S: 
—25. On the Light of the Cassegrainian Telescope, com-~ 
pared with that of the Gregorian. By Captain Henry Kater, 
Brigade- 
. 
’ 
