1322 BULLETIN OF THE BUREAU OF FISHERIES. 



Very large and striking specimens are grouped in panels or friezes extending 

 the length of the hall in the space between the ceiling and the tops of the cases 

 (pi. CXXXVIIl). 



The labeling in this hall is based on the principle that since the exhibit 

 has a double aim, being intended for both the general public and the students 

 and instructors of the city schools and colleges, there should be a double system 

 of labeling to meet the needs of the two classes. To this end the method of 

 utilizing the exhibit by each class has been studied. 



Rainbow Trout 



Salmo irideus Gibbons 



The so-called Rainbow Trout comprise several closely related 

 species, and are noted for their gameness, dash, and beauty. 

 They are found in mountain streams of the Pacific States 

 and on the slopes of the Sierra Nevada Mountains. The 

 typical Rainbow Trout i^Salmo irideus) is found only in small 

 brooks of the Califomian Coast Ranges, and considering its 

 size is perhaps the gamest of the series. It takes the fly with 

 great readiness, even leaping from the water to meet it, and 

 the struggle that follows is sure to be a long and keen one. 



The weight of the Rainbow Trout varies from a half to 5 or 

 6 pounds, though the latter weight is exceptional. 



Fig. 3. — Example of popular label for individual specimens. 



The average person who enters the hall simply to see the exhibit is attracted 

 first by the group cases. Then he passes before the synoptic cases, stopping 

 here and there as his eye is attracted by some specimen. That is, it is the 

 pictorial effect of the groups, or the striking features of some specimen, that 

 draws his attention. In either case, if his interest is sufficiently aroused, he reads 

 more or less of the accompanying label. ^Therefore the pictorial group labels 

 and those with the individual specimens should be popular in character to meet 

 his requirements (see fig. 3, p. 1322). 



The elementary student of fishes, on the other hand, requires a systematic 

 presentation of the subject, which will supplement and illustrate his studies. 



