LIST OF ILLUSTRATIONS xi 



Page 



Septic Tank and Siphon Chamber for Twenty to Twenty-Five Persons 858 



Septic Tank with Dosing (Siphon Chamber) and Absorption Field 859 



Sewer Disposal System with Septic Tank, Siphon Chamber, Diversion Chamber and Absorption Field 860 



Tile Fields for Subsurface Irrigation 861 



Sectional View of a Diversion Chamber Showing Guards for Stop Planks 861 



Plan of Diversion Chamber 862 



Small Septic Tank Showing Method of Using Filter Trench and Ventilation System 862 



Cross Section of Intermittent Filter 863 



Schematic Tank of Crowfoot Distributor for Intermittent Filter 864 



Subsurface Sewage Filter 865 



Urinal for Use in Connection with the Soakage Pit or Privy 866 



Urine Soakage Pit 866 



Ablution Bench and Method of Disposing of Wash Water 867 



Sketch of Grease Trap and Soakage Pits for Kitchen Wastes 868 



Soakage Pit for the Disposal of Kitchen Wastes 869 



Stand for Garbage Cans 870 



Multiple Shelf Garbage Incinerator 870 



Multiple Shelf Incinerator, Barrel Type 871 



View of Incinerator for Resort Use .... . 872 



Wire Baskets for Immersing Dishes in Boiling Water 873 



Wire Baskets Filled with Dishes 874 



The Ober Flytrap 885 



Details of the Ober Flytrap 885 



Hodge Window Sash Flytrap 886 



Plan of the Chicago Zoological Park in Forest Park, Chicago,- Illinois 907 



Revised Preliminary Plan for Zoological Garden, Franklin Park, Boston, Massachusetts 908 



Plan of Zoological Garden, Hermann Park, Houston, Texas 910 



Old Bear Pits, Philadelphia Zoological Garden, Fairmount Park, Philadelphia, Pennsylvania . 911 



Bear Exhibit in St. Louis Zoo 912 



Showing Plan of Separating Cages 913 



A Type of Fence Constructed of No. 6 Gauge Wire, etc 914 



Illustrating Same Type of Fence as Shown in Plate 364 915 



Illustrating Manner of Construction of Interior of Monkey House, Philadelphia Zoological Garden . . 916 



Outside Enclosures for Monkeys, Philadelphia Zoological Garden . 917 



A Table of Information Regarding Aquariums of United States 936 



New Plan for the Botanic Garden of Harvard University 954 



Plan of the Arnold Arboretum 956 



Plan of the Missouri Botanical Garden, St. Louis, Missouri 958 



Preliminary Plan of the New Site of the Missouri Botanical Garden, Gray Summit, Missouri . . .961 



General Plan of the New York Botanical Garden, 1920 963 



Board of Health Commissioners Exhibit at Health Show, Milwaukee 986 



