ILLUSTRATIONS 



FACING PAGE 



I. Blood-vascular System of Ophiodon elongatus^ the blue cod 138 

 II. Portions of same, continued 140 



III. Portions of same, concluded, with detail of branchial arch 



of Hydi'olagjis colliei 142 



IV. Details of Blood-vascular System of viscera of Hexagrain- 

 mos decagram7nus^ ScorpcenicJithys mar7noratus^ Sebas- 

 todes aziriculatzis^and Sebastodes Jiavidus 144 



V. Details of portions of Blood-vascular System of Anoplo- 



poma ji7nbria 146 



VI. Heart of Ophiodon elongatus 148 



VII. Anterior portions of Sternarchiis brasilieitsis^ S. albi- 

 fro7is^ S. inacrolepis^ Sternarchella schotti^ and Ster?i- 

 archogzton tzattereri 1 80 



VIII. Ste7-narchorhanzphus ta77iaiidzia and parts of S. 77zulle7'i 



and Ster7zarchorhy7zchus mor7)iy7-zis 183 



IX. Ster7za7-chorhyrzchzis czi7-vii-ostris^ S. oxyrJzyncJizis and 



Steatoge7zys eleguTzs 1 84 



X. Heads of RJza77zpJiic]ithys 77za7-77zoratziSy Hypopo7tzzis brev- 



z7-ost7'z's^ Eige7Z77za7t7zia vz7-esce7zs and Gito7z fasczatzis... 186 



XI. Heads of Eigerz77za7t7zia /zu77zboldtiz\ Gymnotzis carapzis^ 



G. ccqziilabiatus and G. obtzisiz-osti'is 188 



XII. Diagrams Illustrating Simultaneous Joints 374 



XIII. Mayon Volcano 3S0 



XIV. Photograph of Pseudosolid 393 



TEXT FIGURES 



PAGE 



1 . Heart of OphiodoTZ eloTtgatzis 40 



2. Yits.rt oi Ophiodon clofzgaius 41 



I . May6n Volcano 381 



2a, »b. Driblet Cone 2S2 



I. Apparatus for measuring force of growing crystals 2S5 



1. Apparatus in construction of pseudosolid 391 



2. Diagram of same 392 



vi 



