458 Bibliography. 
that the vésicule embryonaire, considered by Schleiden to be for 
of ~ extremity of the pollinic tube, exists in the ovule before f 
tio I can not confirm this statement as to the Cucurbi 
find an embryonary cavity, but no contained vesic In i 
ays, an example prominently adduced os Mirbel and Spach j in oe 
gous to that of Nuphar lutea, bat not extending farther than the middle 
of the nucleus, and of peculiar conformation. After repeated dissec- 
tions, most carefully conducted, [am unable to detect the smallest trace 
of a suspensor like that figured by Mirbel and Spach, (Annales des 
Sciences Naturelles, April, 1839 ,) and the ‘ grappe de trés ~ utri- 
fewer cellules, by no means pendulous, but forming a conglome erate 
opaque mass, of an ovate oblong figure, which appears to be intimately. 
connected with a central tee in the interior of the ‘ utrieule primor- 
diale,’ communicating with one or more roundish or! oblong bres: 
(within the — at the opposite “gg where the su pore 
pensor should visible, if it existed. The contents of the ‘ oe 
[or quintine] pretties be xatétictoaly siamese beyond this point, by 
reason of their extremely delicate structure, the least: ve. causing 
lobulo-cellu- 
along chal ‘te 
moreover, the parts are soon ruptured or Srey altered i earance 
y endosmosis, while the dissection i is under examinatio w 
een advanced on either side of the question.” 
Further particulars of the scientific mission to Thib 
ditional letters from Dr. Thos. Thomson. Amon 
and seventy-two genet 
In the March No., yd Bentham’s Contributions to the Flora of 
Guiana,—to which he now gives a more general character, and in- 
known as natives of pet eee a of word 
Wincilogiat and eae of Ireland. But we rejoices 
