Douglas Island news., 1920-06-25
SALMON SUBJECT
 OF THE LECTURE
Learned Professor Gives Theory of Solution ol Salmon Saving
 Problem

lra measures arc taken to assist ua- mrr r conserving Che supply vas ono of Che outstanding statements In paper read tH.s morning by Dr. Barton Warren Eyerm1uu. San Francisco. director or Che California Academy ol Sciences. at Che opening meeting o. tae paedc coaa- division of the AmeHoan Association tor che Advancement of so.onc, at Che uu- verr ol Washington.
 rho meeting. which vu nst tfrce day. hos brought to Seattle noted mon %. .eac. from the Pacific c,..t and Northwest Co d.aeu.s soI- er.. a. applied to rhc pacaea.aes of everyday Ue ot Che average Drn n- Er.manus dscus.on o- One fisheries situation s said Co hr indicative o, One practical tes- urc. or Ono discussion.
 Of Che If section meetings abNuIel for tbs morning local iu- trrr. .rurrcd chiefly m a d...us- srr of rrhe Animal and Plant Re- sou-e.s of Che North paeIfc Oeeu. of which ono orthc features was Dr Ererm.rus nan.r or -Cau Che Ans ta Salmon Fisheries Be sageIe
 Dr. rrrmar ..H rr.ert uvasti- rarr.s made by nr Charles H Gu- bert o. Stanford University have ahoer tbat trr soekeye salmon when mature return to One s'roam I'm which rbcr nc-e ba,rbed thu dom ons.raure rfc validity ot Che 'pa- rent stream theory" Tho great ma- Iortr return u four yoart but a largo percentage m 6vc years In One Fraser R.ycr the majority are .fourycar l.t. n Che NGshaeak Bay Alaska. m.s arc chiefly frc-yaar fsh Fsh matched Iu tvo different .rrnm.. however rIo.c together Che mouth. rr fhose two streams may bc. aIurt. return oarb to itr own snar- Hrrn- Hre.m A salmon fishery se- curing I. catch from one particular stream Er therefore seriously de- r.e.e or r,0n W.nc ou- che run In thrt stream ur'r.. sufficient uum- br- s permitted to .s.apa end as- oerf Che stream tor spawning pur- ro-
 Nrrsfy thc -rr. I'm moot of nc Ar.ta streams ravr boon eroarIv -rdr-rd .r ..r. tn some .hc run has boon practically wiped or-. as Pro. John N Cobb has shown in hs s,a- ttr.I reports
 Tho .aaaker aIs.i the question as to whether Che rot salmon fisheries of Aa... .an be reaabuafcl and arar mad. n going concern He Is rorrfrn. H.. can. but t win re- uu.re Hme and morcy. to do it.
 rrr 0r. and essential thIue Co do." said ur Erormruu. "is to make n rr.er. study a. every rcd salmon streem I'm Alaska and determine che maximum capacity ol each in spawn irr fish. faaf s how many salmon .an Che spawning beds accommodate without injurious o-oadre At the ame Hme ths Is being lore doter- m.rr che number of ust ascending each stream fo spawn This eau In most rases h. done by raraue the stream and counting rhc nsh a. .hey orc permitted to pas, fhroush gate i'm frr mrk. This vas found to he entirely practicable by experiments or Wood River. Aaska. Tha .ertu. must .1.erf over a period of at 'cast trn rears .n ns to cover at 'elst t0o returns of mature Hsh. iu e1ch year haf rhe .ersrs Is taken of fsh es ean.nr to lh. spawning beds. th. number O. H.h caught by Che cln rrrs from tne run u thet stream must hc determined The number caught by fhr oarners niur Che es cape as determined by fhe count aI Che rack um be che tota, rom .o' nat vcar And the ruu in any ou. vrar win be the result OF product o Che number spawning four roar pre- y.ousIy tor fyc years 1T It be a Ave ycar fshI.
 "rhese data win enable fhe Iuvos r-rtor to determine Che ratio he twcan catch and escape and to know che actual s.1e of the run which may be expected to result from che spawn Ire of a definite number Of fish Whom ths ratio s once determ.ne ther tre th.rr to do .s to nek th
 stream lot through Che uck tt number of Ush necessary Co proluc rhe maximum catch desired OF nhic che stream win stand. and then ie thc fishermen catch au One rest H Che easiest way thev can This wl usually hc by means of haul seine operated Ius. below che rack. Th.
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