io STUDIES IN GEOLOGY, No. 4 



but a species of the genus Eremopteris, his Sigillaria I was 

 unable to identify from an inspection of the material and as 

 there are no true Sigillarias in my collections I cannot say 

 whether his specific name is correct or not. His L,epidoden- 

 dron is not Lepidodendron Sternbergii but represents both 

 of the species recorded from this locality in the present paper. 

 His Calamites and Stigmaria appear to be correctly deter- 

 mined. 



The scarcity of coal at tidewater on the West Coast 

 aroused a great local interest in Fuch's discovery, pertenen- 

 cias were quickly taken out and much money was spent in 

 putting down concrete lined shafts and in diamond drilling 

 although the complete section is admirably exposed along 

 the south shore of the peninsula. Prospecting has not 

 resulted in economic development, since the coal seams are 

 thin and the coal contains a prohibitive percentage of ash. 



Subsequently Fuchs gave a brief account of the geology 

 of this general region in his paper on the copper deposits 

 around lea and Nazca. 2 In this report he considers that the 

 Carboniferous at Paracas is continuous to the eastward be- 

 neath the Pleistocene and recent deposits that form most 

 of the surface of the country in the belt lying between the 

 igneous rocks of the Western Range of the Andes and the 

 present coast, i.e., the Pampa de Condar, Pampa de Chun- 

 changa, Pampa de Pisco and Tablazo de lea. Another ac- 

 count of the Paracas Carboniferous without, however, adding 

 anything to our knowledge concerning it, was published by 

 Dorca in lo/oo,. 3 



Steinmann, who did not visit Paracas, saw Fuchs' collec- 

 tion at the Cuerpo de Ingenieros de Minas in Lima. In a 

 short note published in 1910 he makes the interesting gener- 



2 Fuchs, F. G., La Region Cuprifera de los Alrededores de lea y 

 Nazca. Cuerpo de Ingenieros de Minas, Bol. 29, Lima, 1905. 



3 Dorca, I. R., Estudio sobre los Yacimientos Carboniferos de Par- 

 acas. Bol'. Soc. Ingenieros, vol. u, pp. 104-130, Lima, 1909. 



