Chap. 11. 
WINDS ON THE TAPAJOS. 
149 
Senhor Cypriano was a pleasant-looking and extremely 
civil young Mameluco. He accompanied us, on the 
night of the 28th, five miles down the river to Point 
Jaguarari, where the man lived whom he intended to 
send with me. I was glad to find my new hand a 
steady, middle-aged, and married Indian; his name was 
of very good promise, Angelo Custodio (Guardian Angel). 
After the 26th of September the north-west day- 
breeze came every morning with the same strength, be- 
ginning at ten or eleven o'clock, and ending suddenly at 
seven or eight in the evening. The moon was in her 
third quarter, and we had many successive days and 
nights of clear, cloudless sky. I believe this wind to be 
closely connected with the easterly trade-wind of the 
main Amazons ; indeed, to be the same, reflected from 
the west after the land-surface in that quarter has been 
cooled by it to a much lower point than the sun- 
heated surface of the stagnant Tapajos. The wind 
always arose in the morning after the air in the direc- 
tion of the north-west had been further cooled by ra- 
diation of heat during the night ; and it ceased in the 
evening, when the equilibrium of temperature between 
the Tapajos and the Amazons had become restored. The 
light land breeze from the east which always began to 
blow soon after the strong north-wester ceased, is attri 
butable in like manner to the wooded surface of the 
land being then cooler than the air on the river. The 
terral lasted generally from 7 until 11 p.m., but after 
midnight it usually veered gradually to the north-east, 
and blew rather freshly from that quarter towards 
sunrise. 
