. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 140 bulletin: museum of comparative zoology. choked with sands thrown up across them by the waves, while their upper portions have been filled up with silts from the land, and with organic matter. There is a large number of small rivers whose lower courses have had this histoiy. Only a few of them need be mentioned. Rio Guaju, at the bound- ary between the State of Parahyba and Rio Grande do ISTorte, has a broad flat bottom filled with sand, ly- ing between rather steep- faced hills. Rio Sibauma, a small stre
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 140 bulletin: museum of comparative zoology. choked with sands thrown up across them by the waves, while their upper portions have been filled up with silts from the land, and with organic matter. There is a large number of small rivers whose lower courses have had this histoiy. Only a few of them need be mentioned. Rio Guaju, at the bound- ary between the State of Parahyba and Rio Grande do ISTorte, has a broad flat bottom filled with sand, ly- ing between rather steep- faced hills. Rio Sibauma, a small stream north of the Cun- hahti, has a similar topog- raphy about its mouth. The Pirangy, though al- most closed by a high sand- bank, has essentially the same general topography. In the State of Parahyba we have similar forms at the mouth of the Miriri, north of the capital, and the Grahii, south of the cap- ital, not to mention the larger streams. In the State of Pernambuco simi- lar forms are common, though often modified by having the flat coast sands built out beyond the steeper bluff's, thus merging the flat river valleys into the flat sandy coast plains. If good maps of them vv'ere available, some of the rivers about Bahia, the Jaguaripe, for instance, would illustrate this matter beautifully. The Jaguaripe, however, is very poorly shown upon the hydrographic charts. Tlie sketch-map (Fig. 77), mostly constructed on the spot, will give, not the exact form, but rather an idea of the generalized features of a portion of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
