ILLUSTRATIONS. Vil 
A PRACTICAL METHOD OF SPONGE CULTURE—Continued. Facing page. 
Plate LX XIV. Sheepswool sponge 35 months old, grown from cutting................. 586 
LXXYV. Sheepswool sponge not over 48 months old, grown from cutting......... 586 
LXXVI. Sheepswool sponge not over 48 months old, grown from cutting......... 586 
PLATES—PART 2. 
FISH-CULTURAL PRACTICES IN THE UNITED STATES BUREAU OF FISHERIES: 
Plate LXXVII. (1) Brook trout eggs on tray, just beginning to hatch. (2) Brook trout 
fry in trough, sac stage. (3) Brook trout fry, sac nearly absorbed, 
LOL CACY" POMCR Oi raat, Po ataret lave crave dey o stare cretars\ in censfeisyeielsyas as varcel ooteteee 699 
LXXVIII. (4) Hatching equipment for shad and other semibuoyant eggs .......... 702 
LXXIX. (5 and 6) Taking spawn of whitefish, Detroit River, Michigan.......... 706 
LXXX. (7) Interior of hatchery at Put-in Bay, Ohio. (8) Downing jars set up 
FOBIG ISGP. te ws ic Ziciy ait Wes lvisiastrein: s wtateiatecarainiere ath sya pies eat hens Aa etmerahe seis) wx 710 
LXXXI. (9) Capturing blackspotted trout in small tributary of Grand Mesa Lake, 
Colorado. (10) Trap for capturing spawning rainbow trout, Lake San 
Cristo) ColortdG 2 eels alee a ote oak aka aie son ache nra Wtayel marcela relate adiare ye 712 
LXXXII. (11) Field hatchery at Grand Mesa Lakes, Colorado. (12) Tray of trout 
Eos ACH PYLTOUS Ma, «gam t.«eialc,o'a/<.s/ a tats erate hal aS Ne tay ve 714 
LXXXIII. (13) Series of covered trout-hatching troughs at White Sulphur Springs 
station, West Virginia. (14) Trout-hatching troughs with Merrill 
PCTANINERROME treo chclalctet ay cietiare ierele Pio Wis lajaie, da) «1 val ciaa memoria larai@ creas Ghote a) a 718 
LXXXIV. (15) Placing cheese-cloth retainers in pond over nests containing bass fry. 
(16) Pond drawn down and nest boxes placed for spawning........... 720 
LXXXV. (17) View of fish-culture station at Manchester, Iowa, showing trout and 
bass ponds. (18) Preparing a shipment of black bass................ 724 
LXXXVI. (19) Main rack across Battle Creek, California, for intercepting spawning 
salmon. (20) Seining spawning salmon on the McCloud River, Cali- 
Weis TE Wt 95 SOI « Aion otic Aes pier ah hee Oe hea AEE a oS oroiD Dee 728 
LXXXVII. (21) Spawntaking operations (salmon) at Baird, California. (22) One 
method of stripping steelhead trout... 6. ccc ccs acre ewe bsews wine sans 734 
LXXXVIII. (23) Equipment of McDonald automatic tidal boxes for hatching cod. 
(24) Berried lobsters in course of transfer to hatchery................ 738 
LXXXIX. (25) Box of trout eggs just opened after shipment. (26) Tray of trout 
eggs with mosquito net and moss in which packed................... 742 
A NEW PRINCIPLE OF AQUICULTURE AND TRANSPORTATION OF LIVE FISHES: 
Plate XC. (1) Floating laboratory and rearing plant from port side. (2) General 
IEW LON OULEL TEAL COMME nee ns 6 Gis cieie Meise ecm nie eis ale ersiel® viele Meroe 3 761 
XCI. (3) Starboard side, looking aft, inside float. 4) Car with propeller in 
TOO Pe eins Sra ae ctd DEO Dee OD Gtes.c TEA ee IEA TO MORRO 780 
XCII. (5) Rearing car raised and held up by portable windlass. 6) Interior of 
FeariupCar. Andy Pro pelletia ata) a aale eters selene Arava slahateinyencds ey afatans kefale,./= 780 
XCIII. (7) Lifting disconnected propeller out of water. (8) Propeller removed, 
: Showinerdisconnected shatt .: acc: acre ele trcctoeaie ayers ecte ecb oe 780 
XCIV. (9) Cleat at end of holding-down plank. 10) Cleats removed, carrising.. 780 
XCV. (11) Interior of rearing car. (12) Raising car by means of windlass.... 780 
XCVI. (13) View of interior of a car, showing filter of gravel. (14) Filter car 
LEO PEHAPTOM ww iahcia, ara ese cyaiclet eis cbole ckeceimtctboe gers coaneys ovat wtoreos aes atalinialste fabs 780 
XCVII. (15) Filter car, showing bucket chain in operation. (16) Filter car with 
‘ GLV ASH LETTE Opn css c BCE oo ate Mini es “dae eee Rey oes nse Oe els RSLS eae en aie e 780 
XCVIII. (17) Detail of device for extension and universal movement. (18) Detail 
of lower portion of propeller shaft and its socket in floor of car........ 780 
