: 
3 
A 
Botany. 448 
having a hardness of 5°0—6-0, and a density of 3:45—8-57, have been 
united with rewire, with which they agree in composition. (Dana, 
Mineralogy, ii 
The phyllite are ‘Thompson according to the analysis of that _— 
contains a larger amount of silica than chloritoid together with mo 
manganese, au 6°80 p.c. of = sh, but having had Sonedton: to repeat 
ary 
cent of potash and in his retinalite, a pure serpentine, nearly nineteen 
per cent of soda.* In both cases the error was at the expense of the 
magnesia of the mineral. The substance examined by Thompson has 
not so far as I know been examined or identified by American mineralo- 
gists, but in the minerological cabinet of the Laval University at Que- 
ec, is a area: from the Piao of the late Mr. gts said ” 
be phyllite fro — is evidently chloritoid, and ¢ 
not be diatiapGishéel ti i spesim s of that mineral sok dese sheik, 
= 
Dp 
oO 
et 
Thompaed occurs in an ar sas slate in Belgium, and in a specimen 
efore me cannot be distinguished wok the phyllite from Massachusetts 
or the riba of Can ge This mineral has however been analyzed 
by Damour, whose n s a guaran sith for accuracy, and differs from 
ehiloritoid 4 in con taining a 5 diesen excess of silica, which might pos- 
sibly be derived from the gangue. The specific gravity which Damour 
has assigned to ottrelite is 4-4—which is so extraordinary for a mineral 
of that composition that we are | spect some error probably of 
ress or he question of the identity of ottrelite with chlori- 
toid is one which requires farther examination. the latter 
wide areas considerable masses of schists, which we have elsewhere de- 
scribed as chloritoid slate. 
II. BOTANY. 
. Journal of the ager semi of the Linnean Society ; Botany. No 
ng a 860), contains, (1.) Notes on Ternstramiacee, by George Bentham, 
critical survey “of the order (for which we could have wished 
she the name Camelliaceee were adopted), in which Mr. Bentham re- 
tains the Sauraujee, - to this refers Stachyurus, very properly re- 
aie yaar ie Saurauja ; also the Gordiniew or proper Camel- 
hi 
new plants of pn Rae ces n, 
(2.) Mr. Crocker, a foreman in Kew Gardens describes the curious ger- 
mination of Streptocarpus ae and a few other Cyrtandree of 
. . s S 
the cotyledons, which from a palate a speeds. in germination 
* Report of Geol. aie of Canada, 1850, p. 40. 
