1897.] Contents. Vv 
512; Report of Canadian Geological Survey for 1894, 513; 
Thaxter’s Laboulbeniacez, 513 ; Comstock’s Entomology, 515 ; 
Hertwig’s The Cell, 516; Kirby’s Entomology, 516; Birds of 
Illinois, 517; The Forces of Nature, 517; Morgan’s Develop- 
ment of the Frog’s Egg, 594 ; Miocene Mollusca and Crustacea 
of New Jersey, 597; Sixteenth Report of the U. S. Geological 
Survey, 597; Russell’s Glacier’s of North America, 597 ; Cocci- 
dæ of Ceylon, 701 ; Section Cutting and Staining, 704; The 
Cambridge Natural History, 704; Aquatic Insects, 705 ; The 
Senile Heart, 706 ; Sixth Report of the Shaw Gardens, 706 ; 
Tarr’s Elementary Geology, 804; U.S. Fish Commission, 804 ; 
Hand-book of British Birds. 805 ; A List of Periodicals............. 
RECENT BoOKS AND PAMPHLETS.—50, 145, 216, 324, 421, 518, te 706 
gl NOTES.— General Biology.—Reactions to Stimuli in Para 
m, 974 ; Average Contribution of each Ancestor to the pola 
Herta of the Offspring, 1043 ; Preformation vs. Epigenesis, 
1044; Dissemination of Organisms, 1044 ; Plankton Note......... 1045 
Parahi. —Basic Rocks of Devonshire, 52; Magmatic Alteration of 
Hornblende and Biotite, 52; Petrography of Little Rocky 
Mountains, 53; Volcanic Rocks of Bolsena, Italy, 54; Analcite- 
Bearing Rocks, 54; Petrographical Notes, 55, 150, 221, 425, 523, 
607, 1053; Petrography of the Viterbo Region. 148; Missourite, 
149; Schists of the Spessart, oe ; Petrographical ary 
150; Rocks at Bedford, N. Y., 219; Basic End-number of t 
Em Syenite Nepheline TATR 219 ; Anorthosites of kaloy 
Lake Region, 220; Volcanic Rocks of Fox Islands, Maine, 220 ; 
Italian Petrography, 326; Eclogite of the neni et oe 27: 
Nodular Granite from Finland, 327; Volcani from Lak 
. Superior, 328; Diabases of Goslar, 328; heme: of “ath Paw 
Mountains, 423; Laurentian Rocks North of Montreal, 424; 
Rocks of the Leucite Hills, 424; Rocks of the Columbretes, 
Spain, 424; Dykes in Tyrol, 425; Mud Enclosures in Trap, 520; 
Ke erae Dyke near New Haven, 521; Gabbros of Bohemia, 
521; Exotic Blocks in Eocene Schists of the Alps, 521; Eleolite- 
Syenite of Portugal, 522; Ancient Volcanic Rocksof Pennsylva- 
nia, 605; Rocks Associated with Magnetites near Port Henry, 
605; Basalts of Steiermark, 606; Volcanic Rocks of Bohemia, 
606; Zonal Crystals, 607; Igneous Rocks of Trans-Pecos, Texas, 
806; Italian Petrographical Studies, 807; Rock Differentiation, 
807 ; Granites of Pyramid Peak District, California, 808; Pegma- 
tite, 809; Petrography of the a Iron gS 1050; Rock 
Formation of Silver Cliff and Rosita Distric TO51 
ae —Production of Precious Brema in ee 329 ; Coloring Mat- 
of Minerals, 331; Pearceite and Polybasite, 331; Miscellane- 
ous Notes, 332; Lewisite and Zirkelite, 601; Epidote and Zoisite, 
of Crystals, 603, 607; Miscellaneous Notes, 603 ; Derbylite, 1045; 
Zirkelite, 1045; Wellsite, a New Zeolite, 1046; Silicate Contain- 
