(\\ MM... I.N-. | 



..Ml \ I 





..n ill.- s tr u c tu re ..f < rnetum, be shows that in n alitj tli 



ovulum. In thai Memoir (dated Vug. i 

 in.- till after the publication of the last edition .•! U 

 description of the development of the parts ..t tl 



-■ At :. period long before the exserti t the anl 



male flowi i u< rally of an oblong form, ai 



body, incloeed in two envelopes. The outermost of tl 

 longitudinally on the upper face, or that nearest thi axis; I 

 to ili.- base o4 the ovule.* The inner or second env< 

 irregularly towards its apex. 



■■ l bis envelope does not at this period entirely inclose the nu< 

 of the bwaniaa or divisions project occasional]] b yond the i 



Tin- nucleus is an ">al i 1 

 rounded off :it it- apex, whi< 

 1 1\ . ■• llular tisi 

 "The next cl 

 mint ..I" the obliti ration of tl 

 fissure, existing all >ng tl 

 outer envelope, and of an exl 

 inner - r the nuc 



becomi a more or l< -- d< \ i 

 of the depression, how 



• . .l-iii of :i coi ry sHl'Iii - \: 



tin- time nf tl- 



dehiscence of the anthers, t ; 

 existing along the upp« i 

 lias disappeared ; \wtli the exo ptii n 

 portion at the aj" x ol the 

 remains undo* -1 throughout I 

 at thi> period in - 



envelope is generally entirely in- 

 within the outei : the points 

 however, to the opening i xisting in I 

 this latter, and dly, but b) i 



universally, proji 1 it t<> :i - 



This coat has undergone scare ly any chanj 

 in shape to the cavity of the outer envelope. In 

 mpletely covered by l".tli integuments, and 

 which continues ••( the same form, is 

 brown. Within its substance, which is entire!) a llul 

 towards it- centre, there i xists a small 

 membranous sac, attached apparently I 



cavity, and taining a number of minul 



brown masses arranged witliout any 

 This sac I consider t.. 1»- the amnios, with wl 

 its development and subsequent disaj 

 rather early period, and is dc v< lop< t w I 

 by some excavating pro 



' •• \ short time after the fall of the 

 ordinary change will be found to ha> 

 of the v.-i-\ rapid and apparent!) sudd, i 

 new membrano-ceUular envel 

 and the nucleus. This new forn 

 the additional coat, envelopes the nucleus prett) cl 

 beyond the apex of the nucleus into a cylindrical tubular ; 

 tube being laciniate or Bmbriated. \t the period now 

 projects beyond the outer envelope. During its d« »i 

 taken place either in the original integum* nts or nucleus, 

 the ovules, except in the instance quoted in the note, hitli 

 ere, will 1-,- found ex nd the outer coat to lis 



•• This division Is perhaps sbnOai I 

 •■ » in one species, ci. Brunonianum, the oruli 

 - ol Um annulate involucre." 



rig. ci.xiv- \i 

 •_• ,i * ; :; a perpendicular section 

 bryo extracted, "itli il> !-'ng fuuicle 



i !.\l\ 



I ■ 



