310 
Part 111. — Tenth Annual Report 
pigment, and nearly ready to hatch. The eggs of the long-rough dab 
were very plentiful, and in these many nuclei appear on the surface of 
the yolk (protoplasmic investment) beyond the rim. They, indeed, form 
an embossed belt beyond it. After preservation the surface of the yolk 
is minutely areolar, apparently from the distinctness of the blastodermic 
covering. These eggs, in regard to development, varied from the for- 
mation of the germinal cavity almost up to the hatching period. A 
considerable number of the eggs of the cod, at similar stages of progress, 
of the plaice, of the dab, and of the rockling, were also present. This 
collection was valuable, since it showed that, even in a living series, the 
variety of ova was not greater, on similar ground, than those forwarded 
in the preserved conditions. Moreover, they formed a useful comparison 
with those collected on the same date in St Andrews Bay, and will be 
again referred to under the modes of preservation and the resulting con- 
traction of the eggs. 
Vicinity of Inchkeith. — Surface, 9th April 1892. A small collection 
Twenty-eight eggs of haddock; 41 of cod and allies; 41 of whiting, 
embryo § round yolk ; of plaice, embryo almost ready to hatch ; and 2 
eggs, near plaice in size, 1*3716 mm. and 1*4478 mm. ; 5 eggs of dab ; 
a few eggs of sprat ; 43 eggs of rockling, f round yolk. 
Cross-Section III. — Surface, 11th April 1892. A small collection. 
Thirty-six eggs of haddock, embryo at various stages up to that with largely 
developed pigment and nearly ready to hatch ; 42 of cod and allies ; 16 
eggs of long-rough dab, embryo just formed in some, in others § round yolk; 
2 eggs of plaice, 1 almost ready to hatch a few eggs of dab, flounder, 
and sprat, and a few of rockling, with embryo J to § round yolk. 
Cross-Section III. — Tow-net, 5 to 8 fathoms, 11th April 1892. Sixty- 
one eggs of haddock, from early stage to hatching period ; 45 eggs of cod and 
allies ; 58 of dab ; 1 1 of long-rough dab, embryo with short tail free from 
yolk in all ; 7 of plaice far advanced, 2 or 3 with richly developed black 
pigment, and almost ready to hatch ; a few eggs of whiting, sprat (embryo 
J round yolk), and rockling. 
Vicinity of Inchkeith. — Side (surface?) tow-nets, 11th April 1892. 
Post-larval armed bullheads, 4 '5 to 6-5 mm. ; sand-eels, 6 to 9 mm, ; 
rocklings, 3*5 mm. 
Vicinity of Culross.— ' M'Intosh ' net, 12th April 1892. Eel, 
72 mm. 
Station V. — Surface, 16th April 1892. A considerable collection of 
eggs. The majority consisted of the eggs of the haddock and those near 
it in size, the embryo being at various stages from J to § round yolk ; 
those of the long-rough dab come next in order, most intermediate between \ 
round the yolk and those ready to hatch ; a considerable number of 
plaice, embryo J to f round ; many eggs of cod and allies, embryo from \ 
to | round yolk, and with pigment ; a few eggs of dab and flounder, from 
early stages to embryo \ round yolk. 
Station V. — Bottom, 16th April 1892. Young wolf-fish (Anarrhicfias), 
22 mm.; sand-eels, 9'5 to 16 mm.; clupeoids (herring), 7*2, with large 
yolk-sac, to 17 mm. ; Montagu's suckers, 5 -5 to 6*5 mm. ; young Cotti, 9 
to 10 mm. 
Cross-Section III. — Surface, 19th April 1892. Few ova. Eggs of 
haddock, embryo chiefly advanced, with tail touching head, and others 
ready to hatch ; 8 eggs of long-rough dab, embryo variable, from just 
outlined to almost ready to hatch ; a single egg of plaice, embryo just 
formed ; a few eggs of dab, embryo J to f round yolk ; eggs of rock- 
lings, from early stage to embryo f round yolk ; post-larval rocklings, 
6-5 mm. 
