264 



this analogy was discussed further by Wichmann-^) and Martin *). 

 In the Southern Moluccas we also distinguish an interior curve of 

 volcanic islands, an intermediate curve, consisting of the remains of 

 folded mountains, and farther to the east the remainder of the almost 

 undisturbed "Voi'land". 



In many points the hypothesis of Suess has been corroborated 

 by subsequent lesearches. K. Sappkr *) has demonstrated that the 

 peculiar curvature and ramification of the tectonical units in 

 Northern Central America, which Suess only suspected, really exist. 

 W. SiEvKRS *) has proved it to be probable that the eastern Oorde- 

 rillas of Columbia split up in the North into different branches, 

 then bend round to the North-east and to the east, and can be 

 traced as far as Trinidad with rather great distinctness. Lacroix *) 

 found in young volcanic rocks of Martinique xenoliths of mica- 

 schist, proving thereby that in the subsoil of this island there still 

 must exist old, metamorphic sediments. Högbom has pointed out the 

 remarkable analogy ") between the eruptive rocks of the Virgin 

 Isles and those of the Andes of South-America. In the collections 

 of the chemist Richard Ludwig W. Sikvkrs has found a young 

 eruptive rock fiom Alta Vela, a small island south of Haiti, and 

 has proved the possibility that this islet may be the continuation 

 of the volcanic interior curve of the Lesser Antilles^). Finally 

 W. Bergt *), who ananged" the above-named collections petrograph- 

 ically, has shown the occurrence of old schists in Haiti. Lastly 

 DE LA ToHRK ') discovered in Western Cuba a fauna of Malm- 

 ammonites and M. Sanchez Roig^") established that this fauna bears 

 a close resemblance to the Jurassic fauna of San Pedro del Gallo 

 in Mexico, which has been tieated in such a masterly way by 



BURCKHAHDT^^). 



On the other hand Sukss's theory has not been universally accepted 



1) C. E. A. W[CHMANN, Samml. Geol. Reichsmus. II, 1887, p. 198 sqq. 



2) K. Martin, Tijdschr. Kon. Ned. Aardr. Gen. VII, 1890, p. 260 sqq. 



») K. Sapper, Peterm. Geogr. Mitt. Erg. Hefte 127, 1899, 151, 1905; Report 

 8th int. Geogr. Congr., held in the Un. States, 1904. 



4) W. SiEVERS, Peterm. Geogr. Mitt. 1896, p. 125-129. 



5) A. Lacroix, La Montagne Peiée et ses eruptions, 1904. 

 «) A. Högbom, Bull. Geol. Inst. Upsala, VI, 1905. 



7) W. SiEVERs, Zeitschr. Ges. fur Erdkunde Berlin, 33, 1898. 



8) W. Bergt, Abhandl. Gesellschaft Isis. Dresden. 1897, p. 61 — 64. 



9) C. DE LA Torre, C.R. Congres Intern. Geol. XI, Stockholm. 1910, p. 1021-1022. 

 ^0) M. Sanchez— RoiG, Boletin especial de la Secrelan'a de agricultura, comercio 



y Irabajo, Habana, 1920. 



1') G. Burckhardt, Bolet. Instil. Geologico Mexico, 29, 1912. 



