food present in these bays are subject to considerable thinning from 
the fish which prey upon them, and it is tempting to attribute the 
diminution of the one to the increase in numbers of the other 
It is difficult, otherwise, to account for the changes which have 
taken place in the food during these years, when that is confirmed 
by observation upon the actual degree of occurrence of the forms in 
question. 
In 1902-8 when the fish fauna reached its maximum according 
to our experimental results, a large percentage of the fish examined 
wore recorded as empty. 
In 1900, when I published a paper on the Mysida? of Cullercoats 
(Report for that year, p. 72), I recorded a female Schistomysis spiritus 
from Cambois Bay. This year, as will be seen from the above 
table, a gurnard had swallowed a pure sample of some 10 examples 
of this species in Alnmouth Bay, young and adult of both sexes. 
For some years Mr, Dent has kept general note of the food of 
the sea trout he captured at Blyth, and sandeels have been found to 
«bo the chief food. Last year he kept more careful note of the food, 
and the results of his examinations are recorded in the accompany- 
ing table. 
SALMON TllOUT EXAMINED AT BLTTB, 1905, BY MB. DENT. 
Food. 
Sand eels in cuch. 
do. 
One empty, the other Sand Eels. 
Sand eels in each. 
do. 
Empty. 
All do. 
Empty, 
do. 
Herring, juv.; Sprats. 
Empty, 
do. 
do. 
do. 
do. 
do. 
do. 
do. 
do. 
