

















e716 . REVIEWS. 
of skeletons, each unique of its kind, whieh bave heen prenefved in those comparatively : 
beds of Solenhofen slate, should be > He i 
ics, the one of the most reptilian of birds, and the other of the most ornithie of reptiles n 
acq a 

g 
when they were the s of a quiet sea or lake ve le 
tructive suggestion. Many of these tracks are wholly indistinguishable 
those o e rd: ‘orm and size; others are gigan hree-t 
t 
of the Weald of our own country; others are more like the marks left by existing repeat 
Amphibia. ‘The ie Spores mnta which these tracks reveal is, that, ke he baseless 



I isted nd walked in the 
t i t fashion, These bipeds were either b à ptiles, or more properly 
he $ ould yi ld 50 

moti  Pepiliári than anchmopler ys, and reptiles s0 much more ornithie pee et ogna 

pat if, = tracing the forms ‘of animal life back in nme we meet, asa 
pt —9 
magine a c creature completely intermediate iae Dromæus and C 

Y, the Parrots, a g-birds, 
However, as many ininig alfferentisted b birds in all probability existed even 
assic om a and as we € posse ss hardly a any know ledge or the terrestrial reptiles of heip 
tl f the animals which late 

it 
wear Birds together historically and genetically; and that the Dinosauria, with Com 
cheopteryx, and the Struthious Birds, only help us to form a reasonable conception 
these eredete. ores may hav e been. 

In conclusion. th ct: 
far as Birds and Reptiles are concerned, are not opposed to = doctrine of. “pvolutiom 
the contrary, are quite such as that riren: kpa lead u ppe 
form a conception of the manner in which Bird y have be evolved 
tertty 7m tify us in maintaining the superiority pe "the hypotiess t chi Birds 

M. Siidon thinks there are in the East two species of horse, 
have hitherto been confounded under the single name of Arab.—$ 
granules have been found by M. C. Dareste in eggs. Tale 
Dareste, adds to the analogy which is thought to exis ist betw rhe 
of animals and the seed of plants. — The old stock illustration of ee 
production of sex in the bee, by the supply of a particular form 
ishment, has received a death-blow in the researches of M. 
paper quite recently published, n narrates numerous expe 
prove beyond question that the food has nothing special to 
production of sex, which, in ki of fact, as worked out by 
tian, depends on the supply of zodsperms. on 
GUIDE TO THE STUDY OF INSECTS. 
> ount 
of building its cells. It consists of 68 pages, 
