ILLUSTRATIONS. IX 



Facing page. 



Methods of studying the habits of fishes and recording their life histories — • 

 Continued. 



Plate CXIX. (ii) Male horned dace picking up a stone. (12) Male horned dace about 

 to drop a stone which it carries in its mouth. (13) Male horned dace 

 which has just dropped a stone but has mouth still open. (14) Male 



horned dace pushing along the bottom a stone too big to carry 1 136 



CXX. (15) Photograph of dace in the act of spawning. (16) Male and female 



of horned dace just after completion of spawning act 1136 



Internal parasites op the Sebago salmon: 



Plate CXXI. (i to 6) Anatomical details of Azygia sebago. (6 to 10) Anatomical de- 

 tails of Sparganum sebago 1 194 



Structure and functions of the ear of the squeteague. 



Plate CXXII. (i to 4) Anatomical details of ear of squeteague 1224 



An inte.nsive study of the fauna and flora of a restricted area op sea bottom: 



Plate CXXIII. Chart of Vineyard Sound and Buzzards Bay, showing depth and charac- 

 ter of bottom at dredging stations 1264 



CXXIV. Chart showing mean air and water temperature at Woods Hole for each day 



of the year 1264 



Volumetric studies op the food and feeding of oysters: 



Plate CXXV. Oyster with filter apron, for study of feeding 1308 



Plan for an educational exhibit of fishes: 



Plate CXXVI. Typical synoptic case used in "corridor arrangement" for exhibition of 



fishes 1340 



CXXVII. Section showing gill arches and pharyngeal teeth of the channel bass, 

 illustrating kind of alcoholic material to be used as accessory anatomical 



exhibit 1340 



CXXVIII. Mounted and painted skin of long-nosed gar 1340 



CXXIX. Mounted and painted skin of yellow perch 1340 



CXXX. One of the cases devoted to the perch group, showing methods of utilizing 



colored plates and labels 1340 



CXXXI. General label defining class Pisces 1340 



CXXXII. A corner in the fish corridor 1340 



CXXXIII. A typical case illustrating arrangement of specimens and method of indi- 

 cating classification 1340 



CXXXIV. A typical case, showing character of material to be used 1340 



CXXXV. One of the shark cases 1340 



CXXXVI. Case devoted to the trout group 1340 



CXXXVII. A portion of the case devoted to the Haplorai 1340 



CXXXVIII. Method of treating large specimens to form frieze above cases 1340 



CXXXIX. Type of label describing a life habit 1340 



CXL. Method of treating small fishes 1340 



CXLI. A method of mounting a single specimen 1340 



Method of preparing fishes for museum and e.xhibition purposes: 



Plate CXLII. Reproductions from photographs of models of black bass, catfish, and 



lumpfish 1355 



The United States Bureau op Fisheries: 



Plate CXLIII. United States Commissioners of Fisheries 1367 



CXLIV. Headquarters of the Bureau of Fisheries, Washington, D. C. Super- 

 intendent's residence at a New England trout station 1370 



CXLV. Marine hatchery and laboratory, Woods Hole. Residence at the marine 



station. Woods Hole, Mass 1374 



