EEYIEWS. 
97 
dered to be tbe representatives of our London deposits. By far tbe most 
interesting parts of tbe paper are tbe notes, which we presume were after- 
wards added. For in these, wbicb are nearly as extensive as tbe text, tbe 
author gives us tbe opinions of Dr. Hayden and Professors Lesquereux and 
Cope in reference to tbe singular want of nonconformity wbicb exists between 
tbe cretaceous and succeeding strata, and alludes to tbe fact that, in reference 
to the chalk and tbe tertiary flora, a complete “ uninterrupted succession 
of life ” took place. In bis remarks, too, on tbe London clay, we find an 
abundant reference to tbe numerous and diversified fossils, animals and plants, 
of tbe period, tbe immense number of turtles (no less than ten species being 
represented in tbe clay of Sheppy) giving tbe Professor tbe opportunity of a 
joke apropos of our civic authorities. One of tbe most important points of 
tbe lecture is tbe table at the end, wbicb shows us at a glance tbe formations 
from tbe cretaceous to tbe recent alluvium, wbicb are present or absent from 
tbe London Basin (at Croydon, London, and Hants) and tbe Belgian and 
French corresponding deposits. Tbe London geologist should be grateful to 
Professor Morris for tbe task be has undertaken. 
Time and Time-tellers. By James W. Benson. London : It. Hardwicke. 
1875. — This little book, although it is doubtless issued with tbe object of 
being a trade publication, is nevertheless a very interesting work for those 
who care for a chatty, gossiping account of tbe history of clocks and 
watches from tbe earliest device down to tbe period of Benson’s great clock 
wbicb was exhibited at tbe International Exhibition of 1862. Tbe history 
is well written and fairly stated, and tbe explanation is given of tbe several 
parts of a watch or clock which have been from time to time added as im- 
provements. Finally, there is a useful 'table at tbe end of tbe work of 
tbe equation of time, by means of wbicb, with an ordinary sundial, one 
may readily calculate tbe exact time for himself. 
VOL. XV. — NO. LYIII. 
H 
