562 



POPULAR SCIENCE MONTHLY. 



Fig. 17. Palythoa grandiflora. A Group of Living Animals. Natural Size. 



Fig. 18. Walsingham Bay. Mangroves and, in the Background, Cedars. Photograph 



by W. 0. Van Name. 



Figures 17, 19-23 and 27 are from photographs by A. Hyatt Verrill. 



