THE BREEDING OF THE NORTH ATLANTIC
FRESH WAT E R- E E LS
The late ANTON F. BRUUN
. Copenhagen, Denmark
Editor'a Note
In August 1961 I wroto to Anton Bruun asking whether he would prepare an article
for the first volume of ' I Advances in Marine Biology". I saw him in Copenhagen the
following Octobor and ho told me that he had nearly fininlied a manuscript in support
of S<*hinidt,'H Ilitwry (111 tho iiiigriitioiin of tho id. A fow wookn lator ho diod. 11, March
I!NV~ tho ~ I I I L I I I I H I ~ ~ I ~ P ~ .
WIIH H o i i L to rho froin Copiihiigwi by 'I'orhnn Wolff.
It wa.~ originally
iritcndotl that tlit: I q m r ~11oulil bo undor the joint authorship of Bruun and Bertelsen,
but subsequently it was decided that there should be one author. The manuscript waa
in the form of draft sections which Bruun had intended to knit together and round off
with a concluding section.
It was obviously unfinished, but nevertheless since Anton Bruun was one of the
foremost authorities on the subject and had worked side by side with Johs. Schmidt I
felt that i t should be published if possible. The manuscript waa then seen by N. B.
Marshall, who agreed.
KO alterations have been made to the original toxt other than minor grammatical
amcndments to the English. Bruun was a maater of languages and the paper haa been
left much aa his friends would have liked to hear him say it.
It is a pleasure to be able to publish this posthumous work aa a tribute to a great
zoologist and oceanographer who had the esteem and affection of so many in all parta
of the world.
I wish to thank Dr. E. Bertelsen, Dr. Torben Wolff and Mr. N. B. Marshall for
their assistance. Mr. J. Boiitius kindly helped in the preparation of the lkt of references.
1 um indoliid t,o 1. ;. IhrtolHoIi for tho followiriy information.
F.S.R.
I.
11.
111.
IV.
V.
VI.
VII.
V I I I .
I S .
s .
xr.
I
137
. . I ari
. . 141
I .
142
. . 147
& .
I54
. . 156
.. 162
.. 164
.. 166
. . 1411
I. INTRODUCTION
Sincc the publication of " The Urcoding Places of the Eel " by Johs.
Schmidt (1925), and even before that, no scrious objections have been
raised against Schmidt's well-founded conclusions from 20 years of
extensive and intensive observations, until D. W. Tucker (19594 put
137
I.
11.
111.
IV.
V.
VI.
VII.
VIII.
IS.
s .
xr.
I
137
. . I ari
. . 141
I .
142
. . 147
& .
I54
. . 166
.. 162
.. 164
.. 166
. . 14n
FRESH WAT E R- E E LS
The late ANTON F. BRUUN
. Copenhagen, Denmark
Editor'a Note
In August 1961 I wroto to Anton Bruun asking whether he would prepare an article
for the first volume of ' I Advances in Marine Biology". I saw him in Copenhagen the
following Octobor and ho told me that he had nearly fininlied a manuscript in support
of S<*hinidt,'H Ilitwry (111 tho iiiigriitioiin of tho id. A fow wookn lator ho diod. 11, March
I!NV~ tho ~ I I I L I I I I H I ~ ~ I ~ P ~ .
WIIH H o i i L to rho froin Copiihiigwi by 'I'orhnn Wolff.
It wa.~ originally
iritcndotl that tlit: I q m r ~11oulil bo undor the joint authorship of Bruun and Bertelsen,
but subsequently it was decided that there should be one author. The manuscript waa
in the form of draft sections which Bruun had intended to knit together and round off
with a concluding section.
It was obviously unfinished, but nevertheless since Anton Bruun was one of the
foremost authorities on the subject and had worked side by side with Johs. Schmidt I
felt that i t should be published if possible. The manuscript waa then seen by N. B.
Marshall, who agreed.
KO alterations have been made to the original toxt other than minor grammatical
amcndments to the English. Bruun was a maater of languages and the paper haa been
left much aa his friends would have liked to hear him say it.
It is a pleasure to be able to publish this posthumous work aa a tribute to a great
zoologist and oceanographer who had the esteem and affection of so many in all parta
of the world.
I wish to thank Dr. E. Bertelsen, Dr. Torben Wolff and Mr. N. B. Marshall for
their assistance. Mr. J. Boiitius kindly helped in the preparation of the lkt of references.
1 um indoliid t,o 1. ;. IhrtolHoIi for tho followiriy information.
F.S.R.
I.
11.
111.
IV.
V.
VI.
VII.
V I I I .
I S .
s .
xr.
I
137
. . I ari
. . 141
I .
142
. . 147
& .
I54
. . 156
.. 162
.. 164
.. 166
. . 1411
I. INTRODUCTION
Sincc the publication of " The Urcoding Places of the Eel " by Johs.
Schmidt (1925), and even before that, no scrious objections have been
raised against Schmidt's well-founded conclusions from 20 years of
extensive and intensive observations, until D. W. Tucker (19594 put
137
I.
11.
111.
IV.
V.
VI.
VII.
VIII.
IS.
s .
xr.
I
137
. . I ari
. . 141
I .
142
. . 147
& .
I54
. . 166
.. 162
.. 164
.. 166
. . 14n