236 Screntifie Intelligence. 
several aaa eanntog from Prof. Cope on vertebrate fossils from 
des in here are some errors with regard to the dates, bear- 
e a way with those pointed out on 118 and 122, 
fakich should be corrected. In the table of contents of this 
he 
that they were read on that day. In fact, however, there was 
no meeting of the Society on the 15th, the regular August 
meeting having been held Friday, August 16th, at which three 
read September 19th, 1872, when no meeting was held on that 
The actual publication of sone 7 ers, by distribution 
is of course a distinct matter, and the evidence is conclusive that 
none of these were so published tac Oct. 29th, 1872, and some 
of them not until long after. 
Ill. Astronomy. 
1. Researches te Spectrum Rie a in connection with the 
Spectrum of the Sun. No. 1.; by J. Norman Lockyer, F.R. 
The author, after referring to ‘the researches in which he has been 
engaged since January, 1869, in conjunction with Dr. Frankland, 
refers to the evidence obtained by them as to the thickening and 
thimning of spectral lines by variations of pressure, and to the 
appearance of certain lines when the method employed by erg 
since 1869 is used. This method consiste of thr So an ee of 
appear from ’ the spectrum “of the vapor at a greater distance from 
the paises so that there appear to be long and short lines in 
the spectru 
The foisieinig elements have been a tae on this method :— 
Na, Li, Mg, AL, Mn, ws Ni, Zn, Sr, Cd, Sn, Sb, Ba, and Pb, the 
lines being lai d’ down from Thalen’s sca hae "the various char- 
acters and lengths of the Tins shown. 
n some cases the spectra of the metals, enclosed in tubes and 
subjected toa continually satetie pressure, have been obse rved. 
In all these experiments the lines Soon ap Lge! as the pres- 
sure is reduced, the shortest lines disuppearing first and the lon gest 
lines remaining ita San isible, 
