( 274 ) 
XXIX. Additional Note to the Remarks on the Nature and Propa- 
gation of Marine Plants, p. 14 
- By Lieutenant Col. Thomas Vel ey, P. L.S. 
Read December. 3d, 1799. 
OLONEL VELLEY wifhes to explain a paflage that poffibly 
may be fubje& to mifconftru&tion in his paper, p. 154 Tec e 
is there obferved that the central fubítance in Fucus ferratus is 
never converted into mucilage. His meaning is, that it does not 
diffolve, as in F. veficulofus, leaving the pericarps enveloped in a - 
filamentous fubítance. The F. /erratus certainly produces a mu- 
-cilage in its fummit, as well as in every other part of its frond at 
certain periods ; and from the indifcriminate fituation of this fluid, 
an argument may arife againft its peculiar reference to the faculty 
of impregnation, Meus is confined merely to the fummit of the 
| plant. 
XXX. Ad- 
