L. M. Rutherfurd on Astronomical Observations, gc. 71 
being pectoral as in man. ere is, in the series of orders, an 
Shown in the larger number of cervical vertebrae in some spe- 
cles—the excessive number of teeth in some species—the char- 
acters of the skull; but also a marked example of cephalic de- 
gradation, in the jaws,—in the very few teeth in most species an 
eir total absence in some—in the inferior character of the teeth, 
and the growth of but one set; in all of which characteristics, 
a8 well as their bulky bodies, there is a close parallelism with 
the Mutilates, the lowest of the Megasthenes. 
— 
Arr. XI—Astronomical Observations with the Spectroscope ; by 
Lewis M. RurHerFurp, (in a letter to the Editors). 
Gentlemen :—In the course of a conversation, last December, 
with Dr, Gibbs, upon the remarkable revelations of the F ewes 
Scope, he suggested the continuation of Fraunhofer’s 0 erva- 
py: Upon the spectra of the heavenly bodies. At that time I 
pec 
of a condensing telescope with adjustable slit, a scale telescope 
With hotographed scale of equal parts showing gs. eee upon 
a dar, ground, a flint-glass prism of 60° and an o 
Provided with an adapting tube in front of the slit by means 
of which the picaieaion is attached to the eye-tube of the 
