1920 Index 399 



INDEX TO VOI.l ME 2. 



Aiiatoiiiy: fish lice, 73; 153; Salmincola edwardsil, 73, 153. 



Auiielicla: summer embryological condition of certain ones, 134. 



Arthropoda: morpliology of Salmincola edwardsii, 153; oxygen consumption in 

 crabs as affected by KCN, 388; Salmincola edwardsii on trout, 73; summer 

 embryological condition of certain ones, 135. 



Cliloroiiliyceae: fungi on Codium mucronatum, 121. 



Cliordata: .summer embryological condition of certain ones, 136. 



Coeleuterata: summer embryological condition of certain ones, 128. 



Diseases^ of animals: trout, 73. 153. 



Eehinwderniata: development of Leptasterias hexactis, 1; key to those at Friday 

 Harbor, Washington, 17; oxygen consumption of some as affected by KCN, 

 388; resistance of sea-urchin eggs to sulphurous acid, 113; summer embryo- 

 logical condition of some, 130. 



Eoolog;}-, auiinal: behavior of some shore fishes (Blenniidae), 79; habits of 

 Melibe leonina, 269; relation of fishes to acids, 87, 97; relation of marine 

 animals to the hydrogen-ion content of the sea-water, 369; resistance of 

 sea-urchin eggs to sulphurous acids, 113; Salmincola edwardsii on trout, 

 73, 153. 



Ecology, plant: early stages in the formation of peat bogs, 195: experiments 

 with Fucus to determine the factors controlling its vertical distribu- 

 tion, 139; hydrogen-ion concentration and other factors affecting the dis- 

 tribution of Fucus, 287; plant migration along a partly drained lake, 393; 

 properties of Sphagnum as a dressing, 211; relation between osmotic pres- 

 sure of Nereocystis and the salinity of the water, 183; relation of variation 

 in the hydrogen-ion content of the sea-water to plankton and other plants, 

 369. 



Eeononiie: fish lice on trout, 73, 153; Sphagnum dressings, 211. 



Embryology: larva of Salmincola edwardsii, 153; list of animals yielding em- 

 bryological material in summer at Puget Sound Biological Station, 127; of 

 Haminea, 45; of Leptasterias hexactis, 1. 



Fuugl: Chytridiales species, 121; fungi on Codium mucronatum, 121; list of 

 lichens from southeastern Alaska, 279; Rhizopogon diplophloeus at Friday 

 Harbor, 95. 



Mollusca: eaily development of Haminea, 45; notes on Melibe leonina, 269; 

 oxygen consumption in some as affected by KCN, 388; summer embryological 

 condition of some, 132. 



^loilnscoifia: summer embryological condition of Terebratella transversa, 135. 



.Morphology, animal: Leptasterias hexactis, 1; Salmincola edwardsii, 73, 153. 



Morphology, plant: annual rings in Alaria, 67; annual rings in Pterygophora, 

 65; of tliiec fungi on Codivim mucronatum, 121; of Pterygophora californica, 

 65; structure of four ligulate species of Desmarestia, 313; variation in the 

 number of ribs in Costaria costata, 307. 



Parasitology: Salmincola edwardsii, 73, 153; trout and fish lice. 73, 153. 



