1888-89.] Dr R. W. Felkin on Tropical Diseases. 
273 
Caterina and the marshy districts of the provinces of Piauhy, Para, 
Mato-Grosso, Goyas, and Minos Geraes. Endemic malaria is also 
found in the prairie lands of Paraguay and Bolivia, particularly in 
the provinces of Tucumana, Salta, and Santa Cruz. Chili and 
Peru are also affected, and the disease extends thence along the coast 
to Ecuador, probably also to New Granada. 
The disease is found all over Central America, hut it is less 
severe on the Pacific coast, except at Corinto. In Mexico malaria 
is most prevalent on the Atlantic coast, and is less frequently seen 
everywhere up to 3000 feet in height, except on the tableland 
proper (Anahuac). On the Pacific coast of Mexico malaria is 
confined to Acapulco, Tepic, and the strip of coast from San Bias to 
Mazatlan. 
In the United States from the Rio del Norte a great malarial 
field extends all over the Gulf coast to Cape Florida, spreading 
far into the interior along the Colorado, Brazos, and Mississippi 
and their tributaries. In Texas the malarial region stretches from 
the coast into the highlands as far as Fort Duncan in Eagle Pass, 
and Fort Makavit. In New Mexico malaria is very widely 
diffused, the limit of its prevalence being Santa Fe. From the 
western part of the Louisiana coast, between the Sabine and the 
Mississippi, the malarial region extends across the zone of bluffs in 
that State, over a great part of Arkansas, especially along the hanks 
of the Mississippi and Arkansas rivers, over the marshy plains of 
the north-east of the country towards Missouri, and over the 
eastern part of the Indian territory, including Fort Gibson and 
Fort Still. In the peninsula of Florida malaria is only met with on 
the Gulf coast, especially in Escambia and Tambabay, and at Fort 
Meade. In Georgia we find it in the creeks along the coast. In the 
Central States of the Union malaria is met with in South Carolina, 
North Carolina, Virginia, and Maryland, and to a moderate extent 
in Tennessee and Kentucky. It is also found within the prairie 
States proper, e.g ., in Ohio, Indiana, Illinois, Missouri, Iowa, 
Minnesota, Wisconsin, and Michigan. In no case, however, does 
malaria extend farther north than 46° 10' N. (Fort Ripley). In 
the southern parts of the State of Michigan malaria skirts both 
shores of Lake St Clair to its junction with Lake Huron, and 
the southern shores of Lakes Erie and Ontario as far as the St 
VOL. XVI. 12/8/89 
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