NOTES AND QUERIES. 



817 



early period by many genera of mammalia^ and would serve to encourage a 

 hope that the remains of that class might yet be found in beds of even more 

 remote age. 



A discussion followed, in which Sir Charles LyeU, Professor Sedgwick, 

 Dr. H. Ealconer, and others took part, m which the importance attaching to 

 the author's discoveries was recognized. 



NOTES AI^D QUERIES. 



MoNaEEL WoBDS. — SiB, — In some late numbers of the " Geologist" you 

 did good service by pointing out inaccuracies of spelling and speaking techni- 

 calities. Would you give the weight of your authority against such a mongrel 

 word as "lignograph," which, half Greek and half Latin, is not to be com- 

 pared in simplicity or force to the good old English word " woodcut ?" — Yours, 

 &c., CuiTic. 



We agree with our correspondent, although we have ourselves used the 

 term "lignograph," in condemning mongrel-words ; but "woodcut" is not as 

 expressive as "lignograph." Woodcut may be wood hacked, and the merit 

 does not entirely lie with the engraver, who is often only a mere machine, but 

 usually with the draughtsman. We have no objection to introduce the term 

 "xylograph," for "graph" has a broader sense than "cut," if we should 

 makeup our mind that "lignograph" ought now to be abandoned. Graph, 

 from grapJios, too, can not be restricted to a mere drawing or writing, it 

 originally described real incisions — inscriptions such as the Egyptian hiero- 

 glyphics — and what we really want is a word to express an illustration drawn 

 and incised on wood. 



Assuredly the word lignograph is a barbarism compounded half of Latin 

 and half of Greek, and we have no respect for it ; but as it has got into use, is 

 it worth while to cliange it ? If any one adopts the Greek compound we have 

 suggested, we shall be happy to follow the example. 



Drift oe Norfolk. — Dear Sir, — In my communication to your magazine 

 I have mis-written Tellina Bathica for Tellina Balthica (see page 141, 

 lines 31 and 34) ; that is my mistake. In the same page, and in the third 

 paragraph, there is an omission which obscures the meaning of the author ; in 

 the third line, after "embedded in it," the following should be the reading: — 

 " The layers of shingle are composed of very small pebbles of primitive meta- 

 morphic and palseozoic rocks, enclosing an abundance of small fragments of ter- 

 tiary shells." Will you have the goodness to notice these errors in the next 

 number. — Yours faithfully, C, B. Rose, Swaffham. 



Geology of Sligo. — Sir, — As I intend visiting the county of Sligo, would 

 you have the kindness, through the medium of the " Geologist," to state the 

 geology of the county, but more particularly that immediately surrounding 

 the towns of Boyle and Sligo. — J. B. B. 



Sligo county consists of an extensive outspread of the Mountain-limestone 

 (or Carboniferous limestone lying beneath the Coal-measures), with some 

 patches of MiUstone-grit, and a wide band of Devonian and Old Bed Sand- 

 stone and conglomerate, passing from Lough Gill to Castlebar, with a granitic 

 nucleus or axis. Near Sligo the upper part of the carboniferous limestone 

 abounds. Near Boyle the Upper Limestone, and some strata of " Yellow Sand- 

 stone" of the Devonian series, occur. J, B. B. shoiild consult Griffith's Geo- 

 logical Map of Ireland, either the large sheets or the smaU map. 



