MARINE BIOLOGICAL STATION ON PUFFIN ISLAND. 9595 
13th July by the spray from a heavy sea, caused by an 
easterly gale along with an unusually high spring tide. 
A new set were then marked (July 13th) higher up the 
rocks and remained unchanged in position till I saw them 
on my next visit on the 27th July, and Mr. Rutherford 
reported to me that they were still in the same spots, 
inside their little rings of paint, on the 13th August, when 
they had been exactly a month under observation. 
Below the subterrestrial zone at Puffin Island we find 
the bands of life on the shore correspond very well with 
those recognised by Audouin and Milne-Edwards on the 
French coast, and by Edward Forbes in other parts of 
the British seas. We have (1) the region of Balani forming 
a well-marked line along the cliffs, (2) the area occupied 
by Limpets and Littorima obtusata on rocks covered with 
Fucus nodosus, F. serratus, and FI’. vesiculosus. In pools 
on this part of the shore is found Corallina officinalis. 
A little lower is the common sea-anemone (Actinia mesem- 
bryanthemum) in abundance, and under stones the annelids 
Serpula and Spirorbis and the Amphipod Gammarus locusta. 
At this point we have reached about six feet vertically 
below the highest Alge on the rocks, and the first Hydroid 
Zoophytes are now found, Diphasia pumila on Fucus and 
Laomedea on the sides of stones, also Membranipora pilosa 
and Chthamalus. Then follow Purpura, Anomia, Mytilus, 
Mucronella coccinea, and various Zoophytes ; then Cancer 
pagurus (small), Alcyonidium gelatinosum, and Amphiura 
squamata. We now reach the ten feet line vertically down 
from the top of the Alge, and meet with Halichondria 
pamcea, and Porcellana platycheles which extends from 
this point down to the Laminarian zone. Next is a very - 
prolific zone, extending to low-water, in which occur 
Alcyonium digitatum, Tealia crassicorms, Cribrella sangui- 
nolenta, Asterias rubens, Serpula vermicularis, Sabellaria 
