A GEOLOGICAL RECONNAISSANCE IN HAITI 720 
economic purposes were so widely scattered that the writer was 
forced to cover a large part of Haiti. Observations made are, 
- therefore, somewhat scattered but a fairly accurate geologic section 
from the south coast to the north range of mountains is the result. 
Many of the problems could be only noted and left for future work 
which the writer expects to undertake. 
Haiti has received but scant attention from Molonees Tertiary 
fossils have been collected by several people, not geologists, and 
have been described in the literature from time to time. L G. 
Tippenhauer, a civil engineer of Port-au-Prince, has published a 
series of maps and papers on Haiti.’ His efforts deserve great 
commendation, though his stratigraphy leaves much to be de- 
sired. His text is largely geographical. His geologic mapping 
in so far as contacts go is generally accurate but similar formations 
are not always so recognized. His topography is excellent and his 
delineation of trails and roads uncanny in its accuracy. 
With such maps available, and with a large part of Haiti, north 
of Port-au-Prince, of open and bare country and with excellent 
continuous rock exposures, the region probably is more ideal for 
field observation than any of the other islands. The several forma- 
tions are here developed in what is doubtless their greatest thickness, 
and a cross-section of Haiti is a fairly complete study in Antillean 
geology. 
In the neighboring republic of Santo Domingo practically no 
work has been done since the early work of Gabb,? excepting the 
recent work of Maury on the Tertiary faunas of the Rio Yaqui del 
Norte.’ 
The writer wishes to acknowledge the free use of the Tippen- 
hauer maps and to use this means of expressing his gratitude to the 
enlisted men and officers of the U.S. Marine Corps who are stationed 
as officers of the Gendarmerie d’Haiti in the larger villages of the 
« “Beitrage zur Geologie Haitis,” Peterm. Mitt., Bd. 45, pp. 25-20, 153-55, 201-4, 
1899; Bd. 47, pp. 121-27, 169-78, 193-99, 1901; Bd. 55, pp. 49-57, 1900. 
2 W. M. Gabb, ‘“‘On the Topography and Geology of Santo Domingo,” Trans. Am. 
' Phil. Soc., XV (1873), 49-260. 
3C. J. Maury, “Santo Domingo Type Sections and Fossils,”’ Bulletins Am. Pal., 
Nos. 29, 30, 1917; and “Santo Domingan Paleontological Explorations,” Jour. Geol., 
XXXVI (1918), 224-20. 
