ii K N !•; li \ I, I' !•: \ i \ K !•: s 



or i.ll;i<AKM 



NEW YOkK 

 C II U S A N, UOTAMCAL 



QAKUiiN. 



WITH IlKM MIKH ON TIIK 



FLORA AM) I'M \\ Ol- rilAT iSj^VM) 



TllK island 1)1" ("liusaii, or (inat ("husan, is situated on the 

 east coast ot'Cliina, hctwciMi lat. M) and .51° X. and Ion;,'. 122' 

 and \'2.\'^ K.* It is tin- ^rrcatcst and most inipctrtant of tlir 

 group of islands which hear that name, and is sc|)aiate(l from 

 the nearest main-land, Keeto I'oint, hy an arm of tlie sea, 

 about ten miles across, thickly studded with smaller islands, 

 varyiufr in extent fnini little slii^htly elevated rocks to islands 

 several miles in circumference. This unintcrni|)ted chain of 

 islands renders it necessary to look nj)on Chusan, and the 

 whole ^rou|) indeed, more as a part of the continent than as 

 islands. The extremes of temperature are more like those of 

 a continent than of an island. The aspect of Chusan is hilly, 

 beinjr traversed by steej) rocks in all directions, occasionally 

 surmounted hy peaks with intervcnin<r valleys. The rocks 

 belon-r to the tdiier volcanic series, chietly consistin;^ of clay- 

 stone, porphyry, aiul a number of varieties, of which Lieut. 

 ;Ouchterlony in his statistical notes has given the following 



J. description : — 



^ "In portions of the elites on the south and north coasts the 

 rocks are observed to assume a columnar structure t, and 

 dvkes and nuisses of greenstone bur>t throuiih the beds of 

 clavstone on various points, indurating anil altering them to 



^ a considerable extent. On the west coast the claystoiu- \un- 



O" 



^^ • .\n ob-iorviitorv rriH-tcd in IHU) near the cnciiicir camp \vn» •titii.'ited 



^■— in :\li° 0' 10" N. and fJ'J*' II' K. Thi- vuriution ot" compass was found to be 

 r^ 2-33 E.. inagnciic dip 4"J-I(i. The cinunilVrcnce cf the islnnd i.n .'il J miles ; 

 fY- iu j{rinte-t l<n;:th alM)ijt '2'), its creatt-»t brcadtli l('i mile:'. The direction 

 ^j of the island i«t from N.W . to S.h. 



^ t Columnar >tructuie is also visible on IJuUUlo Liand, a short distance 



to the soiithw.ird of Chusan. 



>}. 



N 



