TABLE OF CONTENTS 
NUMBER | (Dec. 7, 1976) 
Silicification of Wood 
by RICHARD F. LEO AND ELSO S. BARGHOORN ........... l 
NUMBER 2 (January 25, 1977) 
Thalia Maravara and the Rigid Air-Blossom. 
Notes on some species of Acampe (Orchidaceae) 
DY GUNNAR SEIDENFADEN. scsceuctedccesavecincciverindieniins 49 
Ichthyotoxic Plants and the Term *‘Barbasco”™’ 
by DOROTHY KAMEN-KAYE ...........sceeseeeceeeeeseeeeeneves 71 
NUMBER 3 (April 30, 1977) 
Albert Frederick Hill (1889-1977) and Economic Botany 
7 CAR VS rT nag rcauescrencensariokieen pcan 9] 
De Plantis Toxicariis e Mundo Novo Tropicale 
Commentationes XV. Desfontainia: 
a new Andean hallucinogen 
By RICHARIE EVANS SCHULTES. cisicccsccic cet nivieansauces 99 
The Identification of an Argentinian Narcotic 
Ty eS A CARO cece csesctcuseictee eee te aemgenies 105 
NUMBER 4 (May 30, 1977) 
De Plantis Toxicariis e Mundo Novo Tropicale 
Commentationes XVI 
by RICHARD EVANS SCHULTES.  ...........cceeeeeeeeeeeeeeees 109 
NUMBER 5 (June 30, 1977) 
The Use of Psychoactive Mushrooms in the Pacific 
Northwest: an Ethnopharmacologic Report 
BY ANDREW Po WEEE: ccccierinsaciceswomsseieinioeransiens 131 
NUMBER 6 (September 30, 1977) 
A Native Drawing of an Hallucinogenic Plant from Colombia 
by RICHARD EVANS SCHULTES AND ALEC BRIGHT .... 151 
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