VI CONTENTS. 



J. BICKEAN CATTELIi. 



Physical and Mental Measurements of Students of Columbia University. 30 



A. H. CHESTER. 



Mineralogical Notes, with exhibitions of specimens 43 



H. E. CRAMPTON, JR. 



Coalescence-Experiments with Lepidoptera 320 



Observations upon Fertilization in Gastropods 76 



The Ascidian Half Embryo (see Annals) 213 



The Early History of the Egg in Molgiila Manhattensis 377 



H. S. CURTIS. 



The Advantages of Long Focus Lenses in Landscape Photography 150 



H. S. DAVIS. 



Parallax of 61 Cygni, etc 319 



The Confirmation of Young's Reversion Layer in the Sun 376 



BASHFORD DEAN. 



Further Notes on the Supposed Palaeozoic Lamprey, PaJseospondylus 

 gunni 369 



BASHFORD DEAN, NATHAN E. HARRINGTON, GARY N. CALKINS, BEADNEY 



B. GRIFFIN. 



The Columbia University Zoological Expedition of 1896 (abstract) .... 33 



R. E. DODGE.. 



Recent Work in Physiography 166 



Work of the Geographical Section of the British Association for the Ad- 

 vancement of Science at Toronto 366 



C. A. DOREJIUS. 



An Exhibition of the Metals, Carbides, etc., obtained by M. Moissan 

 with the Electric Furnace 326 



W. K. GILLETT. 



Remarks on the Summer School under the Auspices of the Alliances 

 Francaises 69 



ARNOLD GEAF. 



Some New Fixing Fluids 72 



B. B. GEIFFIN. 



Chromatin Reduction in Thallasema and Zirphsea 306 



On the Platodes, Gephyreans, Nemerteans and Mollusks of Puget Sound, 32 



