WOODWORTH: GEOLOGICAL EXPEDITION TO BRAZIL AND CHILE. 29 
slender stock of provisions obliged us always to make rapid transits of 
the long stretches between settlements. We camped on the head- 
waters of the Rio dos Patos, the bed of which abounds in agate pebbles 
derived from the trap. 
September 3rd.— The mule road ascended rapidly from camp to 
elevations by aneroid of 4,000 feet on the crown of the northwestern 
arm of the Serra where there is a small settlement and a store. Small 
streams continued turbid. The interstream areas were weathered 
into deep pits with numerous bogs. 
September 4th The march to the northwestward today lay at a 
high level on the northeast side of the crest of the Serra, a rolling 
country partly open campo and partly occupied by pine. Inhabitants 
became more frequent and pack-trains indicated the proximity of the 
terminus of the railway. At half-past two we heard the whistle of a 
locomotive and at 5 Pp. M. came out upon the line of the railway in 
construction from Porta da Uniao southward over the trap -plateau 
to the Rio Peixe. At 9 o’clock at night we found our way into Sao 
Joao, from which place on the following day we returned by train to 
Ponta Grossa leaving the pack-train to come along at its own gait. 
September 15th.— With the view of studying more in detail the 
tillite beds on the banks of the Rio Jaguaricatu in northeastern Parand, 
Dr. Oliveira and myself with a small camp outfit and one camarada 
went from Ponta Grossa to Sengéns Station on the newly constructed 
railroad. While absent from our camp on the 16th, our tent and most 
of the contents were destroyed by a fire. Fortunately none of my 
instruments or notes were lost. ‘Through the courtesy of the railway 
officials we slept in a railway storehouse that night and the following 
day returned to Ponta Grossa. 
September 19th—In company with Dr. Euzebio Oliveira I 
returned to Rio Negro with the intention of exploring the tillite beds 
along the road between that town and Sao Bento. It was on this 
occasion that Dr. Oliveira found a bed of fossiliferous marine shales 
between boulder-beds on the south side of the Rio Negro. About 
two legoas above Rio Negro there is a water-fall where the Ribeira das 
Rutes falls over a hard bed of tillite. 
From Rio Negro I returned to Curityba en route to Paranagua, 
whence by steamer I reached Rio de Janeiro. The delay in waiting 
for the steamer was utilized at Curitybaand at Paranagua in examina- 
tion of the superficial deposits and studying the topography, the 
results of which studies are embodied in the account of the geomor- 
phology of this part of Brazil. 
