11 



Goldsmith, Edwakd. A Quick Method of Testing for 



Gold, . 550 



GuDE, G. K. Descriptions of New Helicoid Land Shells 



from Japan, 017 



Harsiibergkk, John W. The Limits of Variation in 



Plants, 303 



An Ecological Sketch of the Flora of Santo Domingo 



(Plates XXXr, XXXII), 554 



Cockscomb Fasciation of Pineapples^, 609 



Heath, Harold, and M. H. Spaulding. Cymbuliopsis 



vitrea, a New Species of Pteropod, 509 



HiGGiNS, Helen T. The Development and Comparative 

 Structure of the Gizzard of the Odonata Zygop- 

 tera (Plates II, III, IV), " . . 126 



JoHXSOX, C. W., and A. W, Grabau. A New Species 



of Clavilithes from the Eocene of Texas, . . . 602 



Keeley, Frank J. Structure of Diatoms, 321 



Keller, Ida A. Demonstration that Plants give off Oxy- 

 gen, 320 



A Peculiar Condition of CEdogouium, 598 



Kraemer, Henry. CrystaUine and Crystalloidal Sub- 

 stances and their Relation to Plant Structure, . . 450 



Lyman. Benjamin Smith. Lodel Creek and Skippack 



Creek, 604 



Meehan, Thomas. Biographical Notice of Charles East- 

 wick Smith, .... 4 



Contributions to the Life-History of Plants, XV: The 

 Bending of Mature Wood in Trees (Plates XVI, 

 XVII), 354 



Montgomery, Thomas H., Jr. '" Further Studies of the 

 Chromosomes of the Hemiptera Heteroptera 



(Plate X), 261 



The Identity of the Gordiacean Species, Chordodes 



Morgani and C. puerilis (Plate XI), .... 289 

 Peculiarities of the Terrestrial Larva of the Urodelous 

 Batrachiau, Plethodon cinereus Green (Plate 

 XXX), 503 



