78 Miscellaneous Intelligence. 
a motions, while a and 7 of the same constellation have a 
er motion in ee opposite diseetior. Now, the spectroscopic 
always be found between the proper motions which indicate the 
apparent motions at right angles to the line of sight and the radial - 
motions as discovered by the spectroscope, still it is interesting to 
remark that in the case of the stars Castor and Pollux, one of 
y Leonis, which has an opposite radial motion to a and f of the 
same constellation, os rom these stars in - propcee ge its 
proper motion.” — Proc. R. 8. of L., vol. xx, No.1 
TV. MiIscELLANEOUS ScrIentiFic INTELLIGENCE. 
1. National Academy of Sciences.—The following is a list of 
papers read at the meeting of es N ational Academy of Sciatioa 
held at Cambridge, Nov. 50, 18 
as sos Fe uscests of the Museum of au Zodlogy in Cambridge; by 
L. Aga 
2. Oe. Deen different modes of teething — —- by L. Agassiz 
. On the manufacture of re for great guns, and on increasing the effi- 
ciency | - Baie arms by improved ammunition rote ee by UM. C. Meigs. 
4, tic Pyrometer ; ss Alfred M. May 
5. mer ‘of the =~ Survey aaiseaiedaad dxjedition to the Rocky Moun- 
— by Chas. A. 
. Presentation 2 y - isothermal chart and of a hypsometric sketch of the Uni- 
ted ‘States ; by Chas. A. Schott. 
Account of the proceedings of the International Standards Commission at 
Paria September, 1872; Be Hilgard. 
8. Developm ment of Acti by Alex. A 
9. The gla a) phenomena pr the Floaithecis es ae compared with those of 
the North assiZ. 
10. AfBiboe of Echinoderms and Worms; ; by A. Agassi 
11. On the construction and advantages of a large rere barometer; by M. C. 
Meigs. 
12. Notice of investigations making in California on the reliability of the barom- 
eter as a hypsometric instrument; ot J.D. Whi wey 
Saesppiere of Echinoderms; by A. Agassi 
e de pices of the ‘relative intensities of sounds, and on bine meas- 
Siete ae the tiene us 
ery vl A, M. May 
. 5. Experimental Exhibition of the exploration of an Acoustic Wave Surface; 
f 4. it 
arches on the chan. nge of oe, of Sie Steel rods and of hol- 
net iron cylinders by their magnetization; by A. M May 
“ Analytical Notices; by 1) 
. Results of recent dredgings on on the coast of New England; by A. £. Verrill. 
ri Tidal Researches; by W. F% 
20. Embryological fragments co Sassen the Volutidae; by LZ. Agassiz. 
21. On the specific cre! of some animals along the Atlantic and Pacific 
shores of America; by L. Agassiz. 
22. The copulatory organs of the Selachians compared with one another and 
with those of other Vertebrates; by ZL. Agase?z. 
