SS On the relative Powers of Algebra 
while in the Geranium, the pistil is made to bend by the fila- 
ments twisting round her! How beautifully does the Spartium 
junceum throw off its keel, that the pistil may have room to 
sweep round, and turn its points to the spreading stamens, which 
pass between each! I have watched this, flower after flower, with 
admiration : for the manner in which it first throws back the 
banner is most curious ; the wings then fly apart, and the inward 
motion of the keel Babuities perceptible ; ; when the sun striking 
full on it, it flies open, and the stamens disperse some of their 
powder. Now at full liberty, the boxes of the stamen open, and 
the pistil turns round, and one after the other presses between 
the two points of the stigma, and thus loads it with powder. 
I must now stop: My letter is already too long. Fig. 7 is 
the ititerior of the flower of the Aquilegia vulgaris, to show how 
the hearts of the seeds pass up the stem to the seed-vessel and 
seeds at eee, and how the juice passes up from the secret nec- 
tary a@ato the stigma /é, and the pollen up the vessels g g 
to the stamen ff. Fig. 8 is asingle pericarpium and stigma at 
top. Fig. 5 is the interior pillar of the Iris, &c. The rest I be- 
lieve I have already explained. 
J am, sir, your obliged servant, 
AGNES IBBETSON. 
Description of Plate 11. No. 8. 
Fig. 9 is the stigma of the Ground Ivy; the pollen powder 
within the balls enters the diminutive holes, when dissolved. 
At aa in 
Fig.4 is one of those stigmas which are so much larger than the 
style, and have a gutter running round at aa a, and descending 
also at Ub to the style. 
Fig. 4 X is the stigma of the Pentandria digynia plant; and 
ccc the hairs at which the mixed juices eter the stigma: it has 
a gutter all round, and one through the middle. 
Figs 3 is the manner in which the stamens loosely surround 
the pistil when it is supposed to be fastened to it. Band C 
two inore stigmas. 
The seeds, fig. 7 X and fig. 2 ¢ ¢ are the shape of the seeds 
at that time, both impregnated. 
NII. On the Comparative Powers of Algebra and Vulgar Arith- 
metic, By WiLL1AM GUTTERIDGE, Esq. 
To Mr. Tilloch. 
Sin,—As you will no doubt acknowledge that in a commercial 
country like ours, the true principles of calculation should be 
thoroughly 
