CATALOGUE OF PLANTS AT BOMBAY. 
449 
117. CAeomc o-phylla. 
1 IS. ,, viscosa. 
1 19. (Yoiularia verrucosa. 
120 Cli'orea Ternaka. 
121. Citrus Decumfl/ia. Puminalo or shad- 
idock. commonly cultivated. 
1 22 . Citrus Auranfium 
123. ,, Limetta. 
124. Cacalia sonc7u/’o?ta.* 
. 125. Chrysanthemum I'ndicion. 
126. Cadsuarina rnwrica/a. Common in 
Bombay, where it is planted for ornament. 
It shouts unvery rapidly. 
127. Coix Lacliryma. 
128. Cicc’A disticha. Fruit sometimes used 
for arts 
129. Cocos nucifera. 
130 Caryota xirens. Thi.<! beautiful palm 
grows plentifully on the Ghauts. ^ 
131. Croton variegatum. This has ob- 
tained the name of laurel, and is very com- 
monly grown in pots. The temporary bun" 
galow.s"oa the Esplanade are surrounded with 
it to keep out the glare of the sun. The 
C. I’iglium grows in Guzurat. I have never 
seen it. 
132. Cynanchum extensum. A common 
twining plant. 
133. Cucurbita Citrullus. 
134. ,, hispida. 
135. lagenaria. The melon and 
cucumber family are very generally cultiva- 
ted, and form a common article of food with 
the natives. 
136j Cucumis sativus. 
137. ,, Colocgnthis- In the Deccan. 
138. ,, Melo. 
139. ,, acufangulus. 
140. ,, Citrullus. 
141. ,, Maderaspatanus. 
142 CyUsta scanosa. Scarce. 
143. Cannabis sativa. An intoxicating 
liquor called Bhang is prepared from it. 
144. Cycas circinalis. 
145. Carica Papaya. Generally cultivated. 
146 Cassandra undulcefolia. 
147. Carthamus tenebrans. 
148. Caesulia axillaris. 
149. Combretum decandrum. 
150. Conyza cinerea. 
151. Cordia, Mgxa. A tree much resem- 
bling the alder. Fruit sometimes pickled. 
152. Cordia angustifolia. 
153. Coronilla grandijlora. Natives com- 
monly plant this tree about their houses. It 
has large showy flowers and is of very quick 
growth. 
154. Ceanothus Zej/Zonica, Elephanta. 
]55. Celtis orientalis. 
156. Caesalpinia TJMZc/iem'ma, 
157. Capparis aphylla. Common in the 
barren lands of Deccan. 
* This plant is also a native of China. I have 
found it abundantly on a rocky point W. of 
Danes’ island village, Whampoa, and also on 
the opposite side of the river Tigris. The 
correspondence of the Flora of Malabar and 
China is very striking, but the present cata- 
logue shews that the same observation does 
not apply to the Concan coast. - Edit. 
15S. Careya arhorea I have seen only- 
one tree on Malabar hill. 
159. { ’ nseavisi ellipfica. 
160 Chloris harhata. 
161. (Jyperus rotundus. 
162. Cynosnvns indicits 
163. Callicarpa lanata. 
164. Celastrus montana. 
165. (Nnometra caulijiora. In gardens, 
scarce. 
166. Codk'ia punctata. 
167. Cvicrus dubius. 
168. " ,, cojnpressus . 
169. Commelina co/nmwnis. 
170 ( 'leome tcosandra. 
171- Cissampelos convolvulacea. 
{To be continued.) 
ON SOME ASTRONOMIC'AL ME- 
THUDS OF OBSERVATION. 
By William Galbraith, A. 1\1., 
Teacher of Mathematics, Edinburgh. 
(Continued from page 384.^ 
remarks on the methods generally 
employed in making circummeridian 
observations.- 
When the smaller instruments of astro- 
nomy are employed by the method of repeti- 
tion, it is of importance to observers to be 
aware of the limits wiihin which their obser- 
vations ought to be restrained, so as to in- 
sure the requisite accuracy. This is the more 
to be insisted upon, as some authors seem 
unconscious of the limits to which observa- 
tions, under given circumstances, ought to 
be restricted, and unacquainted with the 
degree of accuracy resulting from the use of 
different tables in the hands of the public. 
The usual tables of reduction are generally 
formed by throwing the expression derived 
from the principles of spherical trigonometry 
into a series of two or three terms. In gene- 
ral, however, when it becomes necessary to 
embrace more than one, oral most two terms, 
besides the probability of introducing other 
errors, the application of a series is more 
troublesome thvm the direct computation by 
spherical trigonometry, and to avoid these, it 
becomes necessary to select objects which, by 
their situation with respect lo the observer, 
are convenient and proper for such a mode 
of observation. 
In general, it may be remarked, that ob- 
jects near the zenith, though the most eligi- 
ble for zenith sectors, or mural circles, are 
disadvantageous for smaller instrument.^, such 
as Borda’s repeating circle, or other portable 
altitude and azimuth circles, when the obser- 
vations are repeated a considerable number of 
times near the meridian. For the use of the 
latter class of instilments, a considerable 
zenith distance is necessary to obtain the 
requisite accuracy, for it will be found, by 
direct calculation, that , when the latitude is 
30o. the declination 20®, of the same name 
with the latitude, and consequently the meri- 
dian zenith distance lO® that even Delambre’s 
formula embracing these terms gives results 
erroneous to the amount of 47 in excess, if 
