—- 125 — 
14, Conglomerate . . . . cso? She tay GO vSees Gnaann Ae Sb ae: Ae 0.30 
15. Sandy shale, fossil plants gmi> tome Get sen yahee Getreo Je 0.30 
16. Coal, Irapud,and black slate , . . oetes oe 0.76 
The place of this section is ata differant facation — that given 
on a previous page, and of course exhibits slight variations therefrom. 
Two shafts were also sunk to test the coal beds north-east from the 
residence of Dr. Barcellos. The lower one of these begins at 100 feet 
below the top of a massive sandstone, or 130 feet below the level of Dr. 
Barcellos’s house, and passed through the following: 
Meters, 
Ie. SUPLACE Soll Gt. Se ve. ee a age a Ae ae EN GS A Ow 1.83 
2, Sandstone. . « « 4 © & # & Be ee ee ee we ee 1.52 
3. Shaly,sandy beds . . 1. 1 ew we ee ee wt tt 3.35 
4, Coal and slate, dark ((rapud). . . 2. 1. 1 ee ew ew we tl 1,60 
5, Shale, to bottom of shaft. . 2. 2. 2. 1. we we ee ee 0.10 
TObal? gia) ae Oe ew See » « «8.40 
The coal at the bottom of the shaft has ieee identified with the 
Irapudé horizon, since it lies 15.24 meters below the top of the upper 
shaft in which a coal hed of practically the same thickness was struck 
at 5.33 meters, or 9.91 meters higher, and 38,35 meters under the base 
of what appears to be the upper division of the S. Jeronymo coal bed. 
The upper division crops at and )elow the mouth of the shaft, and the 
3.85 meters of separating material is entirely of clay. These coals are 
very much weathered at both shafts, so that their true nature is not 
revealed, but both contain a large proportion of slaty material. 
In passing down RioIrapudéfrom the fazendaof Dr. Barcellos, all 
of the coal beds soon sink helow water level, since the rate of dip is 
rapid in that direction (north-west). The outcrop of the coal measures 
swings westward, from Rio Irapud, and while very little exploration 
has been made, natural exposures are occasionally found, and thus the 
coal is known to be persistent. 
One of these natural exposures, made by a land-slide, is on the fa- 
zenda da sesmaria do tenente Ricardo, about 15 kilometers west from 
Rio Irapua, where the following succession is visible : 
Meters. 
1, Shale, soft, gypsiferous (Palermo). . . . . 2k 
2. Sandstone, and conglomerate. . . 2. . . © «© «© © © «© © «© 24.3 
3. Coaland coaly slate (Treviso?) . . 2. 2. «© «6 © © «© we ew 0.91 
4, Sandstone, with ttle shale. . . . . + » ole x 9.14 
5, Coal, and coaly black shales, upper division of S. Satoriy mo) visible. , 1,83 
