1885. ] Proceedings of Scientific Societies. 633 
— The April number of the Journal of the Royal Microscopi- 
cal Society contains Rev. Mr. Dallinger’s notable address on the 
life-history of the monads, illustrated by three excellent plates. 
He concludes that the vital processes in these lowest organisms 
are as “orderly, rigid and immutable as in the most complex 
organisms,” though as in higher animals allowing free scope to 
the action of natural selection. 
-— The Annals and Magazine of Natural History for January 
last publishes an article from the ///ustrated Melbourne Post for 
Sept. 24, 1864, in which it is stated that about ten months previous 
an Ornithorhynchus laid “two eggs which were white, soft and 
without shell.” 
A.—In Vol. xvii, a. 140, and Vol. x1x, p. 277, it is 
stated T co trilobites have pte discovered in the Cian 
rocks of Australia. This is an unfortunate error which our read- 
ers will please correct. 
293, lines 10 from top and 2 from bottom, for emarginate 
read marginate 
wong” fe marae 
: 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
NATIONAL ACADEMY OF SCIENCES.—This body met in Washing- 
ton, D. C., April 21st. The following papers were re 
I. Methods of measuring the cubic capacity of Crania, by J. S. Billings and Dr. 
Matthews, U.S.A. 2. On winged insects from a paleontological point of view, by S. 
H. Scudder of Connie, Mass. 3. On the Syncarida, a hitherto undescribed group 
of extinct malacostracous Crustacea, by A. S. Packard of Providence, R. I. 4. On 
the Gampsonychide, an undescribed family of fossil schizopod Crustacea, by A. S. 
Packard of eae R. I. 5. On the Anthracaridz, a family of Carboniferous 
macrurous decapod Crustacea, allied to the Eryonide, by A. S. Packard of Provi- 
dence, R. I. 6. On the coral reefs of the Sandwich islands, by Alexander Agassiz. 
7. On the origin of the fauna and flora of the Sandwich islands, by Alexander 
Agassiz. 8. On the classification of natural silicates, by T. Sterry Hunt of Montreal, 
Canada. 9. On the cause of the tig at movement of areas of low pressure, 
by Elias Loomis of Yale College. 10. On the ratio of the meter to the yard, by ra 
B. Comstock. 11. An account of certain stars observed by Flamsteed, 
have disappeared, by C. H. F. Peters, Hamilton College, N. Y. 12. On Sr igs 
ne by J. S. Billings. 14. The orders of fishes, by Theodore Gill. 15. On the 
tion of the tribe, by J. W. Powell. 16. On certain lunarine qualities due to 
ae action of Jupiter, and discovered by E. Nelson, by G. W. Hill. 17. On the Pre- 
tertiary Vertebrata of Brazil, by E. D. Cope. 18. On the phylogeny of the placental 
Mammalia, by E. D. Cope. 19. On some recent observations eae the rotation and 
surface markings of Jupiter, by C. A. Young. 20. On the value of the Ohm, by H. 
A. Rowland. 21. On the vanadium minerals: Vanadinite, endlichite and descloiz- 
