:j ihe i 177 



in thickness, and is frequently found to consist of very thin 

 layers, separated by films of vegetable matter, probably 

 marking the annual increase. Near the sea level, the silt 

 erally more than six feet in depth, and is mnch mixed with pros- 

 trate timber. :::er. it su:h ynattlti-s as t: s.-gi-es: :he lie* :i-: 

 they are jammed accumulations of drift-wood which have been 

 gradually buried beneath the sod. 



Besides underlying the river inteivals, the unmodified drift 

 frequently occupies the smaller valleys and ravines, to a con- 

 siderable depth. It consists generally of a stiff and 

 mixture of coarse sandy clay with gravel and boulders. He 

 majority of the boulders are small, and many of them are 

 longitudinally grooved and striated. It is impossible to say 

 ''■-'--r :!i:ktess this '::v:lie: f:mrJ:r may a— sin. ": :: :: ~ as 

 seen exposed in many places to a depth of at least 100 

 feet. So far as the evidence afforded by the materials them- 

 selves is ;:i:e:nei. :: ~: : la :has art ear :■: ': e :•: l::al gla:ial ::i- 

 gin. Some of the banks occur in such situations as to suggest the 

 ilea :■:' :aei: h a—hag leei terminal m: raizes :: the :gla:iers — h::h 

 arm ran rnvm :hc vaheys h" : ::e g: : : ~t5 have hitherto ree: 

 observed upon the solid rocks, probably because these are seldom 

 or never nnt-overecl in sitnahons — "nere the:: :::a:ea:e might 1 e 

 .ookei :kr, G-r: :ves — ere fount: :a the : : :ks a: the heal ::' the 

 fall on the Dartmouth, and a fall at the month of its first large 

 tributary f::m tue ::■"':. These ~r:e n: irur: rr minted : _ 

 smues borne *:y ;he ite ami irff: rim':e: — ni:n are s~e .: ramiiy 

 down with the freshets in spring. These current scratches 

 are quite short, and made upon an uneven surface ; while tine 

 glacial furrows are continuous, and always occur on a smoothed 

 or riaued ": \ s e . St me years ago. me ::;': many ms: returned :o. :u : 

 off a uarrovr ue.k : : ".arc which separated i: fr:m :ne river ::i 

 several huuireu va: is. st :ha: i: r::~ rants i: in a aire:: tumrse, 

 at right angles to that of the river. At every spring freshet, 

 sir.ee this than _ e took: ace. i: has meoimbatel a „-.rge tmautity 

 o: s-hingie- over the ie ige a: its month, in:: :he bei of :ne river t 

 ar i ir. this way a lark has been f:rmei rrposite :: the fall 

 which is already as wide as the former channel of the river, and 

 is every year increasing in extent, and turning the main stream 

 farther out of its original course. 



The small amount of debris usually found about the cliffs 

 would seem to indicate that the country had existed in its present 

 -condition fc: a comparatively short period; but on the other 



Ca.h, Xat. :: V:l. tUL 



