j v ( 0NTENTS. 



PAGE 



Holland, William J. David Alter, the first discoverer of 



spectrum analj sis (abstrad I 134 



Hoi STON, Edwin J. How the natural sciences can be made 



attractive to the young (abstract) 143 



Howe, Marshall A. Reef-building and land-forming sea- 

 weed- (abstra 137 



Jacobs, Merkel II. Physiological characters of species 



(abstract) 146 



Lyman, Benjamin Smith. Natural history morality 138 



M< Ai ik. \Y. L. The experimental method of testing the 

 efficiency of warning and cryptic coloration in protecting 

 animal- from their enemies 281 



Macfarlane, John M. The relation of protoplasm to its 



environment (abstract)* 147 



Mai ry, Carlotta .). A contribution to the paleontology of 



Trinidad (abstract)* 132 



Meigs, Edward B., and L. A. Ryan. The ash of smooth 



muscle (abstract) 136 



\i lson, .1. A. Structural peculiarities in an abnormal queen 



bee 3 



<>snni!\. Henry Fairfield. Tetraplasy, the law of the four 



inseparable factors of evolution (abstract)* 144 



Parker, George Howard. Sensory appropriation, as illus- 

 trated by the organs of taste in vertebrates (abstract)* 147 



Pennell, Francis. Kurt her notes on the flora of the Conowingo 



or Serpentine Barrens of southeastern Pennsylvania 520 



Pilsbry, Henry A. On the tropical element in the molluscan 



fauna of Florida (abstract ). 142 



bi.nv James A. G. The orthopteran inhabitants of the 



Sonoran creosote bush (abstract) 143 



R] n\. .1 wn;s A. (I., and Morgan Hebard. Fixation of single 



type (lectotype) specimens of species of American 



Orthoptera. Set Caudell and Hebard ■ 60 



A revision of the genera and species of the Group Mogo- 



plistii (Orthoptera: Gryllidse) found in North America 



north of the Isthmus of Panama 184 



Orthoptera found on the Florida Keys and in 

 treme southern Florida. I 235 



Shufeldt, R. W. Notes on a prehistoric race of Yucatan 



'Plate- XIX XXI) 492 



