14 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
‘“* In previous reports attention has been called to the 
occurrence of large numbers of the ephyra stage of 
Aurelia aurita in the spawning pond during the winter 
months. This organism again occurred in January and 
February of the present year, but in greatly reduced 
numbers. Its numerical position was taken by the 
ephyra of another species of Medusa, probably Cyanea 
capillata, which was very abundant until the end of 
February. The Anthomedusa Margellium octopunctatum 
also occurred in enormous numbers at the same time. In 
many of these, three generations could be seen. Plankton 
organisms were abundant in the pond during the summer 
and autumn months, and in a good lght the lobster 
larvee could be seen pursuing and feeding upon them.”’ 
DESCRIPTION OF THE NEw BUILDINGS, 
The new Research wing, measuring 44ft. by 18ft. 
and two storeys high, runs southwards towards the cliff, 
at right angles with the main building, which it joins at 
the eastward or laboratory end (see fig. 3). It is built of 
the same local stone and in the same plain substantial 
style as the older part of the institution. It was 
commenced in September, and finished in December, 
1910, and will be furnished ready for workers by the 
Easter vacation, 1911. On each storey there is communi- 
cation with the old building—on the ground floor by 
means of the former back laboratory door, and on the 
upper floor by means of a transformed laboratory 
window. Each floor also opens into the back yard, the 
upper one by means of an outside stair. 
The ground floor contains a photographic dark-room, 
a store-room for chemicals, apparatus, and glass-ware, a 
