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upon Luminous Animals, 
■although they appeared as vigorous as when first taken, their 
form was not in the slightest degree altered, and their size 
but little increased. By this experiment I was confirmed in 
the opinion of their being a distinct species, as the young 
actiniae and medusae exhibit the form of the parent in a much 
shorter period than the above. 
In September 1806 , 1 took at Sandgate a number of the 
beroe fulgens, but no other species : they were of various 
dimensions, from the full size down to that of the medusa 
scintillans : they could however be clearly distinguished from 
the latter species, by their figure. 
Since that time, I have frequently met with the medusa 
scintillans on different parts of the coast of Sussex, at Tenby, 
and at Milford haven. I have likewise seen this species in the 
bays of Dublin and Carlingford in Ireland. 
In the month of April, last year, I caught a number of the 
beroe fulgens in the sea at Hastings; they were of various 
sizes, from about, the half of an inch in length, to the bulk of 
the head of a large pin. I found many of them adhering 
together in the sea ; some of the larger sort were covered 
with small ones, which fell off when the animals were 
handled, and by a person unaccustomed to observe these 
creatures, would have been taken for a phosphoric substance. 
On putting a number of them into a glass, containing clear sea 
water, they still shewed a disposition to congregate upon the 
surface. I observed that when they adhered together, they 
shewed no contractile motion in any part of their body, which 
explains the cause of the pale or white colour of the diffused 
light of the ocean. The flashes of light which I saw come 
from the sea at Herne bay, were probably produced by a 
Nng 
