18S 
Scmitific Intelligence. --^Botany . 
ment being very strong, on the evening of the same day, I made 
an analysis of the liquid, and I found it to contain hydrochlorate 
of ammonia. I repeated the same experiment several days succes- 
sively, and always obtained the same results. — From this experi- 
ment, I find reason to be convinced that the Chenopodium vulva- 
ria spontaneously disengages free ammonia during the act of vege- 
tation. I have also been aware, for several years, in conjunction 
with M. Boullay, that a great number of flowers, even of those 
whose smell is very agreeable, spontaneously emit ammoniacal 
gas. We cannot hesitate to recommend this observation to the 
attention of those who occupy themselves with vegetable physio- 
logy : and, since M. Chevallier has been so fortunate as to dis- 
cover this important phenomenon, it were very desirable that he 
should push his researches farther, and direct them toward the 
influence which the solar rays may exert upon this disengage- 
ment, taking special care to exclude the vegetable earth, the pre- 
sence of which might interfere with the ve^xAts.-^Annales des 
Sciences Naturelles, tom, iv. Avril 1824- 
16 . Contributions to the Flora of Scotland . — In our list of 
plants found in the Highlands last summer, we omitted to men- 
tion that Hypnum alpestre had been discovered by Hrs Greville 
and Townsend, in Breadalbane. Since our last publication, Mr 
Drummond, nurseryman at Forfar, has found the Weissia lati~ 
folia of Schwaegrichen. This was derived from that inexhaus- 
tible source of botanical riches, the Mountains of Clova, and is, 
we believe, confined, both on the Continent and in this country, 
to a micaceous soil. It is not a little remarkable, that it grew 
intermixed with two of the rarest plants of Great Britain, Oxy- 
tropus campestris and Didymodon glaucescens. Dr Greville 
has already figured it in his Cryptogamic Flora, at p. 149^ 
Daltonia heteromalla^ a moss only recently ascertained to be a 
native of Scotland, has been found on the banks of the North 
Esk, opposite Preston Holme, by Mr M. Stark, Professor 
Graham, and Mr Macnab, have examined a Senecio.^ observed 
by the gardener at Woodhall, and found it to be S» tenufolia^ 
and new to the Scottish Flora. It grows abundantly in clay pas- 
tures around Woodhall. 
17. Carrodori on the contraciWility (f Vegetables. 
