GRILSE 31 
presented by Mr. Malloch to the Perth Museum, a 
grilse of 2 Ib. 15 oz. The second specimen was 
kindly sent to the writer, and was exhibited, with 
the mark in situ, to the Royal Society of Edinburgh.* 
It is a male grilse with genitalia in an undeveloped 
condition ; length 24 inches, weight 4 lb. 8 oz. The 
interval of time between marking and recapture is 
thirteen months. Between the date of the first re- 
capture and the end of the fishing season, 1906, those 
wired grilse occurred not infrequently in the Tay 
nets. No recapture was reported from any other 
locality. The weights varied from 24 to 9 1b. The 
following details of date and weight respecting the 
recaptures during June and July will sufficiently 
show the results of this experiment as regards 
grilse :— 
DATE. WEIGHT, 
lb. oz. 
1. June 1 = x 2 15 
2. » 26 : 4.8 
3. » 28 4 12 
4, July 3 . 3 4 
5, 9 4 a Oe: 48 
6. » LO . 4 4 
7. «(C14 « § T2 
8. sy lt . 7 0 
9. » 16 . 6 8 
10. » 16 . 6 12 
11. 5 16 . 4 8 
12, » 24 . & 8 
13. » 26 st @ 
14, » 28 . 6 8 
15. » 28 “ 2 
16. Aug. 4 5 0 
* “Note on the Smolt to Grilse Stage of the Salmon,” Proc. Roy. 
Soc., Edin., xxvi. 
