9—1850.] 
highest commendation for 
execution.” 
rog 
The object is to show, by meansof pa and colours | 
over maps of various parts w 
great facts belonging to climate, geological formations, 
and the distribution of living things upon the surface of | « 
For i i map we have a repre- 
n of America; in 
, 
tructure of the globe ; in two 
ion of the amount of rain 
which falls over the world in general, and e in 
parti so on. i nine maps shows the 
animals, and human 
letter-press, embodying 
agreat quantity of well-arrang 
and classifying all ts which are 
e more important 
natural philosophers. 
se maps the most interesting to us is that 
a glance “the distribution and cultiva- | 
the most important plants which are used as 
food for man.” Could such a map be suspended in the 
meeting room of farmers’ clubs and gardeners’ reading 
we should cease our pati 
nd- 
ing Mr. Johnson's Atlas strongly to all who are interested | 
in the subjects of which it treats. 
Genera Flore Americe boreali-orientalis illustrata. 
The Gen- ra of the Plants of the United States, illus- 
trat i Nature ; by 
a nalyses from Nat 
Isaac Sprague. Superintended by Asa Gray, M.D. 
Vol. II., plates 101—186. 8vo. Putnam, New York 
a 
n 
Ar p. 7, of the Chronicle for 1849, we gave our opinion 
of the first volame of this important work, which is 
destined to do more 
botany of the United 
+ th is bette merits a 
kinder report. Like other artists, Mr. Sprague im- 
his hand ctice ; and the knowledge of 
r. Asa Gray is an exhaustible mine of useful technical 
observations. So equal to anything 
of the kind produ of Mallowworts 
i ie „we trust, meet the eye of Professor 
Schleiden, and assis 
ging his views of the true | 
plants. | 
ray’s remarks upon the genera of this family 
the most novel and striking i 
of the states of Europe will have 
when it is completed. 
THE GARDENERS’ 
for the student of the systematical | | 
States than a ich bas 
planted 
open ground, Horticul. Society’s Journal, Jan. I, 1850. 
W. 
Chinese Method of Colouring Green Tea.— During a 
visit which I paid to i i 
hanghae I happened 
came from the celebrate 
They would not acknowledge that any colouring matter 
was used in the manufacture of their teas, and pre- 
tended to laugh at the idea of such a thing. They said, 
moreover, that they were aware the practice of colour- 
ing was a common one i inferior 
where 
teas were made, but that they never coloured the 
in Wheychou. 
t 
ir teas 
It is, however, a difficult thing to get 
i 3 m in ion 
CHRONICLE. 
uring summer, where it ha 
bough undoubt- | add, improved. 
day Mr. Shaw, a merchant in Shanghae, 
Whey 
pans we 
if an 
this 
veg 
—and I hope I may 
; It seemed perfectly ridiculous 
lised people should prefer these yed 
| of a natural green. Now 
| si r 
tes of 
what quantity of gypsum and indi 
they eat or drink in the course 
ins 
tuted for indigo, And yet, tell these 
tea drinkers that the Chinese 
eat dogs, cats, and rats, and they 
will hold up their hands in amaze- 
ment, and pity the taste of the poor 
celestials. i 
p 
mined at the window to see if 
were uniform in colour ; and if the 
t sometimes happened 
that there was a slight difference 
amongst the eamples, and in that 
Calendar of Operations. 
(For the ensuing week.) 
mistake, is much better to determine : 
what you have not room for at onee, than to have your 
