106 FISH CULTURAL ASSOCIATION. 
(3.) In 1875, among specimens of Anguilla marmarata from India. 
(4.) In 1875, in the Baltic, at Wismar, on the Danish coast, by 
Prof. Von Siebold. 
(5.) In 1877, in the lagoons of Commacchio, by Jacoby. Among 
1,200 specimens, five per cent. were males; while among 
these, less than 15 inches in length, 20 per cent were 
males. This was in brachial water. (See paragraph 
XIX). 
(6.) In 1879, at Trieste, by Dr. Hermes, who found 15 males 
among 20 eels selected by Dr. Syrski. : 
(7.) In 1880, on the Baltic coasts of Denmark, by Dr. Hermes. 
Out of one lot of 39 from Wismar, he obtained 8 males, 
thus repeating Von Siebold’s observation. 
(8.) In 1880, from the Baltic between Zealand and Saland, Den- 
mark. Out of one lot of 36, Dr. Hermes obtained 8 
males. 
(9.) In 1880, in France, by Robin. 
(10.) In 1880, by Catter. 
(11.) In 1880, by Dr. Hermes, at Cumlosen, on the Elbe, about 
120 miles from the German Ocean. 
(12.) In 1880, at Rugers on the Baltic, by Dr. Hermes, who found 
444 per cent. males in one lot of 137. | 
(13.) By Dr. Pauly, among eels planted at Hiinnigen, in Elsass.- 
Sothringen. See below. (be! 
It has been shown by Dr. Pauly that among the very young 
eels [monté], taken near the mouths of rivers, is a considerable 
percentage of males, which, when transplanted to fresh water, 
will then retain their masculine characters and develop into per- 
fect adult males. This discovery is, of course, of the utmost 
importance to fish culturists, making the attempt to introduce 
eels into new waters. Its importance has already been pointed 
out by Director Huack. | 
The practical lesson to be learned is simply this—that young 
eels, for introduction into strange waters, must be taken from 
very near the mouths of rivers, in order that both males and 
females may be secured. The interest to zoologists lies in the 
fact that Pauly’s discovery renders the theory of Von Siebold 
less plausible, indicating that the sexes of the young eels are 
