64 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
the same disease that attacked them the previous year. On July 16 
Mr. M. C. Marsh, who has been detailed to make a systematic study 
of fish diseases, visited the station for the purpose of investigating the 
cause of the diseased condition of the adult brook trout, and remained 
until August 1. 
The rock-bass ponds were drawn on August 1, and 6,000 young 
were transferred to the hatching-troughs for distribution. The fish 
were not shipped until October 22 and during this time about 50 per 
cent of them were lost. 
Several hundred adult fish were collected near the station during 
the fall, and early in April 118 of them were placed in Pond V and 
117in Pond Z. The fish were noticed spawning in May, and the first 
fry were discovered on June 15. As the ponds were not drawn down, 
no estimate could be made as to the result of the spawning. 
On account of the excessive drought during the early spring and 
summer, and the consequent failure of the Mississippi River to over- 
flow its banks, very little work was done at the Bellevue collecting 
station. Lakes and bayous from which thousands of young black 
bass and crappie had been taken the previous year were practically 
dry, and although a large extent of territory was covered only a small 
number of young fish could be secured. Work commenced on July 
5 under the direction of Mr. Charles Hruby. Fishing continued from 
July 11 to September 1, during which time 16,089 black bass, 4,570 
crappie, 829 yellow perch, 65 sun-fish, 300 pickerel, and 2,274 cat-fish 
were collected and delivered to the cars for distribution. Work was 
discontinued on September 1 and the station closed for the season. 
During the spring of 1901 the station was opened and arrangements 
made to commence actual work on July 1. 
Fish on hand at Manchester station at beginning of the year 1900-1901, 
Calendar year in which fish were 
Species. a - _hatched. pe A SS, 
1901. | 1900. | 1899. | 1898." | 1897. 
BrOOKNOUb seeee ac see enna. csi ce cae ee on mene te eaae ences | 60,000 960% --=2- 5 | Gaacee Se 649 
RAI DOWEROUL secs etna, oe 2 er eee eee ere eee 153000)}|2222--=2 Por: (0M aia ed 1,140 
MochwHisven trot; gy 6e aoe see cee es se ence wean Sn O00) Bee seere OMe SeSee ee Sees 
(Gaia eee Ee hae eS eee Ria eee Pe Se eee eee Set AB Ties ell ee oc ee 
ROCK bass). cess aeascceee = ee eee oN eres noe Jose Seo oe eee 235 
| 
Air temperatures at Manchester station during the year 1900-1901, 
| Mean | Mean 
Min.) Max.) aver- Min.| Max., aver- 
age age 
1900. | 1901. 
SUN ese teeta nob -eentis Sosa 59 | 92 185 \l PANU ATG ae sae ose e eee —]0:| 48 24 
US te en ee eee | 68] 95 $3) || MebRUary f22-.95- 225 2225 eee —20 38 18 
September 2-2. 225_.2._l2:<2- 40| 98 GO| Marchi ees oe as ao Sees eee 2 62 36 
Wctober ee eae. | 46) 86 645 Apriliee= eee eens 32] 90 57 
Niovember 222-522 22-.2-522 | 1] 65) 39"l| May. --252..s3222 2.222524 222 44 90 66 
Mecemipber = 2225. .25-s6ccc 22. | 0} 50) Qi NM SUN Gt Sere ee So ee sees 48 | 100 7 
Water temperature constant at 50. 
