Part ILIL.—Twenty-third Annual Report i 
Otolith of Plaice, 12cm. long, 2 immature, caught near Aberdeen, April 
1, 1905. Shows only one year’s growth. 
PLATE VIII. 
. Scale of Plaice, 35cm, long (14 inches), from Aberdeen. Zeiss A Oc.2. 
Shows five annual zones of growth. 
. Otolith of same specimen. Zeiss a, Oc.2. Shows also five zones of 
growth, with slight irregularity in fourth zone. 
2. Otolith of Plaice, 31-2em. long (124 inches), from Aberdeen. Shows 
vf 
three annual zones. 
. One of the anterior vertebrze of Plaice, 182 inches long, from Aberdeen, 
showing the zones of growth in the concave face of the vertebra. 
. Coracoid and scapula of same specimen, showing five zones of growth. 
. Seale of Cod from Dr. Fulton’s experiments, killed August 1904, in its 
second year. Zeiss A Oc.2 camera. Shows two annual zones. 
. Cod, 30°‘7em. long, caught near Aberdeen, March 1905. Transverse 
section of otolith, showing two annual zones of growth. 
PLATE IX. * 
. Transverse section of skin of Cod from Dr. Fulton’s experiments. Pre- 
served with formaline. Zeiss A Oc.3. 
. Portion of same section under higher power, to show nuclei on upper 
and lower surfaces of scale, and at edge. 
. Surface view of scale of Whiting under higher power, showing nuclei 
on upper surface and their relation to the ridges of the sclerites. 
. Pectoral girdle of Cod. C/.=Cleithrum (clavicle). Co. =Coracoid, 
S. =Scapula. 
