SCIENCE 
EpIToRIAL ComMMITTEE: S. NEwcoms, Mathematics; R. 8S. WooDWARD, Mechanics; E. C. PICKERING, 
Astronomy; T. C. MENDENHALL, Physics; R. H. THURSTON, Engineering; IRA REMSEN, Chemistry; 
J. Le Conte, Geology; W. M. Davis, Physiography; HENRY F. OSBORN, Paleontology ; W. K. 
Brooks, C. HART MERRIAM, Zoology; S. H. SCUDDER, Entomology; C. E. Brssry, N. L. 
BRITTON, Botany; C. S. Minot, Embryology, Histology; H. P. Bowpircu, Physiology; 
J. 8. Brutines, Hygiene; J. MCKEEN CATTELL, Psychology; DANIEL G. BRIN- 
TON, J. W. POWELL, Anthropology. 
Fripay, Jury 14, 1899. 
CONTENTS: 
The Structure of Protoplasm: PROFESSOR E. B. 
\NVTEESIOR To coococogaubcopcadonsesecoco sosudcHedanoopd dopobonde 33 
Pictures in Three Dimensions: C. LADD FRANK- 
The International Catalogue of Scientific Litera- 
ture -— 
Botany : PROFESSOR CHARLES E. BESSEY....... 46 
Anthropology: DR. W J MCGEE.............. ...66- 48 
The Royal Society of Canada: Dr. HENRY M. 
PANIIT eres ret cteetatoeiae cisiclete siete Setarslarn csieiellsteleieiectorcis sinitaleinicialaice 50 
Scientific Books :— 
Edinger’s Anatomy of the Central Nervous Sys- 
tem: PRESIDENT C. L. HERRICK. Jloses on 
the Character of Crystals: DR. A. S. EAKLE. 
Evans’s Algebra for Schools: DR. C. J. KEYSER. 
Dearborn on the Emotion of Joy: Hiram M. 
STANLEY. Books Received...........csccssseeecseees 52 
Scientific Journals and Articles........2...cc000ee0eee eee 56 
Discussion and Correspondence :— 
The U. 8S. Naval Observatory: PROFESSOR 
A. HALL, JR. Cerebral Light Again: PROFES- 
soR JOSEPH LE CoNTE. Pot-hole vs. Remolino : 
OSCAR BH PHE RSH. ccccisssdececadecscsseececeeas cs 57 
Astronomical Notes :— 
Proper Motion; Fundamental Star Catalogue ; 
Parallax of the Andromeda Nebula ; A Hyperbolic 
Comet Orbit: PROFESSOR WINSLOW Upton... 58 
Recent Progress in the Examination of Foods and 
Drugs :— 
Medicinal Plants; Medicinal Principles: DR. 
ELE NIRRYs ROR AM MIR eatlecansececlercecreseccesceesecssecee 59 
The Decennial of Clark University......ccccccesccseeceee 61 
Professor Beecher’s Gift to Yale University..... 61 
Proposed Inscriptions for the Statue of Darwin. 61 
Scientific Notes and News.,......-..++++++ aorere poan) | At) 
University and Educational News.........2c1cceseseeeee 64 
MSS. intended for publication and books, ete., intended 
for review should be sent to the responsibie editor, Profes- 
sor J. McKeen Catteil, Garrison-on-Hudson N. Y. 
THE STRUCTURE OF PROTOPLASM.* 
Ir would be superfluous to dwell in this 
place on the deep and enduring interest 
that attaches to the microscopical study of 
protoplasm. Since the time when the 
studies of Cohn and Schultze led to the 
general recognition of protoplasm as the 
material substratum of vital activity—a 
conclusion so eloquently set forth by Hux- 
ley in his celebrated essay on the physical 
basis of life—this interest has continually 
increased, as we have come to see even 
more clearly that all biological phenomena 
are directly or indirectly traceable to the 
effects of protoplasmic activity, for we have 
thus been impelled to seek for an under- 
standing of that activity in the morpholog- 
ical structure of protoplasm, as revealed by 
the microscope. It is small wonder that to 
this quest some of the ablest of modern 
biologists have devoted their best energies. 
And yet, if we take account of the actual 
* This lecture is printed by permission of Professor 
C.O. Whitman, Director of the Biological Laboratory 
at Wood’s Holl, and Messrs. Ginn & Co., the publish- 
ers of ‘ Biological Lectures delivered at the Marine 
Biological Laboratory, 1889-99,’ in which it will ap- 
pear. A more adequately illustrated special paper on 
the subject, containing more specific references to the 
literature, is now in press. It should be borne in 
mind that such delicate textures as those seen in the 
protoplasm of living cells cannot be properly illus- . 
trated by black and white figures. The accompany- 
ing text figures, though copied as accurately as pos- 
sible from the original drawings, are of necessity 
relatively rude and schematic. 
