110 HISTORY OF BRITISH ZOOPHYTES. 
drium rameum) was recovered from among the rocks of a 
cavity in the bottom of the Firth of Forth, at about 150 
feet from the surface. It had vegetated in such a direction 
that it was detached quite entire-—Being transferred to a 
capacious vessel of sea-water, I found it rising seven and a 
half inches in height, by a stem about nine lines in diameter 
near the root, then subdividing into several massy boughs, 
besides many lesser branches. Numberless twigs, termi- 
nated by thousands of minute hydre of the palest carna- 
tion, clothed the extremities, which were ten inches apart. 
“The root itself diffused irregularly, by a multitude of 
mossy-like fibres, which might be circumscribed by a circle 
of two inches diameter. It is to be observed that the stem, 
and the higher rigid portions, consisted of irregular bundles 
of tubes; but about two inches of the highest were in ver- 
ticillate arrangement. Though composed of bundles of 
tubes below, the absolute extremities, bearing the hydre, 
resolve into single tubes, each with its animal. 
“ Many parasites invested this splendid specimen. Masses 
of the pure white and deep orange Alcyonium digitatum 
hung from the boughs; Sertwlarie, sponges, and algee were 
profusely interspersed, all proving, by their obvious succes- 
sive generations, the great antiquity of the Hudendrium. 
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