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. rt ive 3 hatched. 
1901. 1900. 1899. 1898. 1897. 
Brookitroutic® 22555525. eee ee eee 60, 000 560 |-- ee 649 
Rainbows trout... 225s. se ee a eee ene eae 15:0003|2aae=s25 2. B40 See 1,140 
luoch*heven trout! ere See eee are ds te eee eee 3) 0005) 22222222 KO ARE Pe Sa eek 
Grayling ss. eee eee Se eee ae eee eee Ss See es eee ASW ose SeESS 
Rock bass2s. Sout jp ae Oe ae RE ES ee Se See ee | Se Pee eee | See 235 

Air temperatures at Manchester station during the year 1900-1901, 







Mean | Mean 
Min.| Max.| aver- Min.| Max.) aver- 
age. | age. 
1900. | 1901. 
JULY je so case aceeeecesse 59 92 18"| | PAT MALY  seseera oa anata —10 48 24 
Auguste 2: See ease ee. 68 95 83 ||| Hebruary,2222 .2--2: =-232 22-4 —20 38 18 
September 2222s ear 40 93 TO) | Mar chien eee oe ee oe 2 62 36 
October2e-s 5 aS ee 46 86 G4) | April Pas eee LY cesta e 32 90 57 
INOVemIDer essseiss nee 1 65 30 ll May se tetaees esas ee nee 44 90 66 
DOCPMIDOR -weetsrer ta aerehy 0| 50 Zi ||| SUNS ee eee Fe eee 48 | 100 79 

Water temperature constant at 50. 
