PACIFIC SCIENCE 
A QUARTERLY DEVOTED TO THE BIOLOGICAL 
AND PHYSICAL SCIENCES OF THE PACIFIC REGION 
VOL. XXII JULY 1968 NO. 3 
Previous issue published April 15, 1968 
CONTENTS 
PAGE 
Baker’s Laiv and Dioecism in the Hawaiian Flora: An Apparent Contradiction. 
Amy ]ean G Umar tin 285 
Characterization and Physiological Activity of Some Kawa Constituents. R. 
Hansel 293 
Gulls in the Central Pacific. Fred C. Sibley and Robert W. McFarlane 314 
Calanoid Cope pods from Midwater Brawl Collections Made in the Southeastern 
Pacific Ocean. George D. Grice and Kuni Hulsemann 322 
Host Specificity, Settling, and Metamorphosis of the Two-tentacled Hy droid Pro- 
boscidactyla flavicirrata. Richard D. Campbell 336 
Two New Calycophorae, Siphonophorae. Angeles Alvarifio 340 
The Associates of Four Species of Marine Sponges of Oregon and Washington. 
Edward R. Long 347 
Ecological Factors on Manana Island, Hawaii. P. Quentin Tomich, Nixon 
Wilson, and Charles H. Lamoureux 352 
The Determination of a Series of Ages of Hawaiian Volcanoes by the Potassium- 
Argon Method . John G. Funkhouser, I. Lynus Barnes, and John J. Naugh- 
ton 369 
Pacific Science is published quarterly by the University of Hawaii Press, in January, 
April, July, and October. Subscription prices: institutional, $10.00 a year, single copy, 
$3.00; individual, $5.00 a year, single copy, $1.25. Check or money order payable to 
University of Hawaii should be sent to University of Hawaii Press, 535 Ward Avenue, 
Honolulu, Hawaii 96814, U. S. A. Printed by Heffernan Press Inc., 35 New Street, 
Worcester, Massachusetts 01605. 
