Algaus.] CHAIIAI 1. 



th ; the inner hard, dry, opaqi five nan 



Ji i I.e. II' founds I i 3 — opinion of the nucule contai 



ly apon the exjM riments of Vauchi . . 



i, which have fallen naturally in the autumn, are kept throi r in 



a ill g< rminate about tin- end of April ; at that time a lit:. 

 from the upper end between the five valves, and 

 branches, which product a Becond. Below these whoi 

 tufts of roots are emitted. The nucule : . l long turn to tin 



o when the latter has itself begun to fructify. Hei 

 that the nucule is reallj one-seeded. I 



nucule "i Chan is cut acr — . an infinite number of little whit ut • 



out it these were really all reproductive particles, how woul i r find their i 



out of the nucule, which is indehiscent ! he c them i 



albumen. And he is the more confirmed in his opinion, in Pilularia, tin- 



thecae of which also contain man} similar grains, but oni plant is produ ach 



theca. .ins have been asc< rtained by the obsi rvations of Kiitzing to be real]) 



starch, iodine colouring them violet ; yet Endlicher » 1« Bcribes them as spirally 



Finally, Amici has descril 2.) the nucule in another way. He 



nits it to be one-seeded, but he considers the point five valvi 



and the valves themselvi - to be at once pi ricarp and style. Th 

 to show that the rive valves of the nucule, as they are call .. whorl ol 



. and twistedi and that the nucul 



bud of flowering plants. 



The globule is described bj Greville as " a minute round body, of a reddish colour, 

 eternally of a number of triangular (always .which - 



produce its dehiscence. The interior is tilled with a 



undulated filaments The Bcales are composed of radiating hollow tubes, partly filled 

 with minute- coloured Bpherica] granules, which freely escape from the tubes when 

 injured." Vaucher describes them as " tubercles formed externally of a reticulat 

 transparent membrane, containing, in the midst of a mucilaginous fluid, certain white 

 articulated transpan nt filament-, and some other cylindrical bodii . ad, 



and appearing to open at the other. These latter are filled with the ivd ra 

 which the tubercles owe their colour, and which disappears readily and long 1" fore the 

 maturity ol the nucule." The account of the globule by Agardh is at variance with 

 both these. '• Their surface," he remarks, •• i- hyaline, or colour!* ss ; under this mi 

 brane is i a red and reticulated or cellular globe, which has not, howe\ 



always such an appearani I of this reticulated aspect, the glob 



colourless, bul marked by rosettes or stars, the rays of which are red or hu 

 In the figures given by authors, one finds sometimes one of these- forms, sometimes the 

 other. 1 have myself found them Loth on th es ; and 1 am disposed !•> 



believe that the last state is the true kernel of the globule, concealed under 1 

 ciliated scale. (Winn the globule is very ripe, one may oft< n succeed, b) mi ai 

 slight devjree of pressure, in separating it into sevi ral valves, as is vi ry well shown in 



roth's figures, tab. 2. f. 3. and tab. 5. rhese valves an rayi !." and no doubt 

 answer to th which mention has been made.) The kernel contain 



singular filaments; they are simple (I once thought 1 saw them I 

 interlaced, transparent and colourless, with transverse str 



d,as in an Oscillatoria or ' ; but what is verj remarkable, tl 



ral together, to a particular organ formed like a bell, which is its 1- 

 but tilled with a red pigment This bell, to the base of which on the outside the> 

 fixed, differs a little in form in different sj -. h is slender and long in 

 vulgaris, thicker in C. firms, shorter in C. delicatula, and shorter still in • 

 I have not succeeded in determining the exact position ol thi se bells in thi 1 



have often thought they were the same thing as the i 



the globule above mentioned; whence it would follow that ill' \ 



surface, while the filaments have a direction towards the centre. 

 numerous ; they often separate from the filaments, and readih 

 which renders it difficult to observe them, and has caused them 

 that these globules, whatever their nature may be, have no resembla 

 ther~, i» clear from these descriptions, whichever maj 

 . the patient investigator of p lien, r 

 Wallroth says In has sown them, and that they i 

 requires to be verified. 



in the annular or chambered threads of Chara are found in ;. -; iral 



boUic- having an active motion when discharg the 



so-called animalcules in n. - s, & -. M. Churet, who fit - of 



LS,ascribesasimilai'movingapparatus to-thes turned 



