PROGRESS IN BIOLOGICAL INQUIRIES, 1938+ 
By Etmer Hiearns, Chief, Division of Scientific Inquiry 
[With the collaboration of investigators] 
CONTENTS 
North American Council or Fishery Investigations____._____________ 
WouncivoMmotate;Governments- = fo) ee eS Pe 
CSET ai kee ee ee 2 be ee ee 
RIACOOGK. Woe ASSESS Be aS eee... ieee ee ener 
IMIR CKE Te enna ane Se hers ow nee ee eh 
ilouncersessrneress of SEPM sige 2 Ly oe) as Coes 
aaalvsisiar proundiish abundance--- 22-23! 2620¢ 22 s_ to 8 SMA 
Middle and South Atlantic fishery investigations___________________ 
SULTING SIGS 2s <i 5 SR aaa Sap 
PET RUPMTTUMESNOSLIGN Settee 8 2 SS a ee ee 
Wiheretopetstions = =e. Be see Je A el ent ok noe 
pierre sep EEN ONL SS 8 ee le Oe ee ay 
HCE cess ere SSS ee eee ee 
North Pacific and Alaska fishery investigations_____._._...__________ 
Columbia River salmon fisheries:. 2252-20202 2_ 22 ete 
CTD Slo 222s ee a ee eae ee nee ee ee eee ere 
Eri svOMrenyaSaLMOntSNeTICS= 30 _ _ _ =. ee ew. - Meese ok, 
Pexiueiver Tea salmous 2. ©! i SEE Eh ee TA a. 
ECR ere ft RS 3 Be en aE 
Bactre pilenard mVvestigations== =<. 2... #22 eee ee 
Sau iCcOm aA DUMCaAnCe ste oo. See ee ee 
AC CRAINGEOTO witneeee, Saat sere a ET sok ee OES Lae 
BriceaiGhoOnyeer <n 8 0 22 = 2s 2 eee oe ee oe 
rem or toe commercial supply. _<--2 5-224 22. S222 ee 
ercnbolakesisherysinvestigatvions...~_._ 22-2224 ek 28 
SiMGlesHOlm@aDUulnGaAncel ea. _ a0 See Petes ed ee ee 
AC CLANGROT OWENS UGIES 2 =e te ts. Se ber ie ee 
Se Genel sine Se ee Se ee ee er eee 
SE SSID Tiras RP eee eS, ee 
Eineelorwania eroyster eS) - gee eee et hee ee 
GOreteracuntibamsuUGicsa sito 1. SPM eae AE oe eS 
Smceiminaryeyaueress cre Sei y) .. Pete toe are. 402 eee 
CUI CULMS tl OA ONS ts 22 kya = eee eee eee ee ee Se 
LR Wie SS AEBS SS ee Se eee eee 
ee ee eee ne eee" _ sown te 2 oe ee 
Rarasitessand @iseases.of fish. 22) 2 Bees Nise ees e 
ihnvestioaiionsmmainteriornwaters. 225252 8 esas se) 28 = eae See 
Pahoa SOC ae a = a ee ee oe ee eee 
Peiinvormolcaisinvesticatlons 2 --2  _.¢ Seen a a ie ean 
Independent activities of the fisheries biological laboratories__.------ 
Mirisdaeniter NMacasise tage eee. Wie ets 
Bien ioit qe 6) Ce oe eee. Ser | 2 eee ee 
SV STROEMITONS 5 Sas SS ee ee oe eee eee cence 
=e 32 
a 47 
pans 49 
a aes 53 
= 62 
are 69 
Si< 73 
oe 77 
1 Administrative Report No. 35, Appendix I to Report of the U. 8. Commissioner of 
Fisheries for 1939. Approved for publication June 1, 1939. 
pee 
