[5] BIOLOGY OF THE RHINE SALMON. 431 
steadily increases in weight in geometrical progression. Table II con- 
tains an analogous tabular statement, relative to the increase in weight 
of the male sexual glands, in which statement small individuals, weigh- 
ing less than 4 kilograms, and actual giants among the salmon tribe 
are not taken into consideration, as they exhibit an abnormal propor- 
tion between the sexual glands and the weight of the body. 
TABLE I.—Growth of the ovarium.* 
| 
| 
| 
$43 | re 
BE. se 
Ss mac) | 2p 
re | BOs. 
Salmon from— Date. Se Es Salmon from— Date. iercy a ES 
pA oO I 
ee ie = rt) 
erie out) 
ase | iS BSS 
1 | Holland Ye 1877 0. 38 i5y | Basel.< seco tec | July 28, 1879 | 5. 30 
2 | Basel } 1877 0. 49 Ihe) | es Cee ee Aug. 24, 1879 | 5. 84 
Suleee-do: 1877 0. 52 17 4|e ose dOlsee Sot ewsess Aug. 7, 1879 | 318 
4°)|..--do 1880 0.77 18) 205200). ss50 555-22 Aug. 23, 1879 11. 63 
5 |.---do 1880 1.13 AON SG dOiecee es se ceee | Aug. 25, 1879 6. 52 
6 |..--do 1880 1.14 20) 3000) sccciccen cs Aug. 27, 1879 6. 69 
Ul Nose) 9, 1879 1.31 21 GO\V2eecccsc- ee Aug. 27, 1878 9. 81 
8 |22=-d0 1877 1. 93 22 Ore secant Sept. 4, 1877 | 8. 50 
9 |....do 1878 3.44 O5ulvewe: do hee meee eee Sept. 6, 1877 9. 89 
10 |.--.do 1879 2. 84 24 AOigccecseasz se! Sept. 6, 1878 | 9. 84 
Aisieee-do 1879 2037 by |2og Pada ceeesceeees | Sept. 51878] 10.39 
12) \e-~-00 1e@9 3. 09 W286) 1. 220 ONeee<cle cance | Sept. 10, 1878 | 10. 59 
L33|bee-d0 1879 3. 40 Wi ser GOl sence cceces Sept. 18, 1878 | 12. 49 
14, |... -do 1879 3. 32 28" | s5.5300)2.s sais aswel 2 Sept. 30, 1878 | 15. 23 
* As to the weighing of the ovaria of salmon in different stages of development see 
also His, I, 28. 
Mature ovaria, November 1 to 16, 1877-1879. 
euohs || eso G8 
iS B+ oe 1} oo, LS 
oons lI oftLl eS 
an og | qh 3 . 
SESEes eer 
Date. x) See Date. Sagevis 
Her 0207 Pn Oo On 
|} Sad ho gaa Aw 
| saugsq || Bing sa 
B RSS RS Sa Bo 
| | 
z = ss Z |) Jee 22 | 
BNO Wee Os LOU © ciciejer cin ncrereissiciisininee 19. 21 | INO Var 1) 1S 10a eteee sises cioani | 24. 37 
(iy bse Ae See ee ee 19. 23 SeISTBt cons eee sss Saree 25. 06 
Cok: yf) RSS e See ee ee 19. 24 TSO ceraccses cece oscsts 26.10 
akira Rey Ata eat See 8 lh eee 20. 12 B WS asso soeoeeesscscetoe 26. 36 
NG USTO ee cctac oslo ccs sceeece 23. 30 NOS LOT O proces eet je sateen 26. 72 
MO ASTO es oeninac coceac seats 24, 00 
Average of ‘he 11 ovaria = 23.09 per cent. of the weight of the body. 
