MAMMALS OF THE MEXICAN BOUNDAEY. 75 



respecting them may be conveniently referred to. In my itinerary, 

 beginning on page 8, will be found such facts regarding the inter- 

 vening»and surrounding country .as seem to be iniportant. 



Station No. 1. — Fort Worth, Tarrant County, Texas. Altitude, 

 193 meters (623 feet). Country rather flat; well wooded with decid- 

 uous trees. Birds and shells were collected on the South Fork of 

 Trinity River January 30 and 31, 1892, by Mearns and Holzner. 



Station No. 2. — Fort Clark, Kinney County, Texas. Altitude, 308 

 meters (1,011 feet). The post is located at the head of Las Moras 

 Creek, a wooded stream encircling it on three sides, and is surrounded 

 by a low, nearly level, grassy, mesquite-wooded country, in which 

 there are a few hills and ridges of limestone. The streams and 

 arroyos are fringed with trees and vines, which not infrequently 

 meet from opposite sides, their branches interlacing above the water. 

 Evergreen oak, elm, and pecan are the principal trees along the 

 streams, and patches of scrub oak, redbud, black persimmon, and 

 other shrubbery cover much of the adjacent strip. Farther away 

 from the streams the country is more open and grassy, often sparsely 

 covered with mesquite, which here has a gracefully drooping habit of 

 •growth. The region is thickly settled, and in a few places the soil is 

 cultivated. 



This station was occupied by me from November 5, 1892, to June 6, 

 1893, and from July 3 to July 14, 1893. Collections of moUusks, crus- 

 taceans, vertebrates, plants, and rocks were made. 



In the autumn of 1897 I was again ordered to Fort Clark for sta- 

 tion, and remained there from November 15, 1897, to June 15, 1898, 

 when the occurrence of war with Spain gave me a change of location. 

 During this period malarial sickness prevented field collecting to 

 more than a very limited extent. 



Flora of Fort Clarh. — In this vicinity, owing to the length of time 

 that I was stationed here, extensive collections were made, as is shown 

 by the following lists : 



The most abundant native trees are : 



Texas Spanish bayonet. Yucca treculeana Carriere. 



Pecan (hickory), ZTicoHa pecan. (Marshall) Britton. 



Willow, Salix — several species. 



Durand oak, Quercua hrei'iloia (Torrey) Sargent. 



Texas oak, Quercus texana Buckley. 



Cedar elm, Ulmus crassifolia Nuttall. 



Sugarberry, Geltis mississippiensis Bosc. 



Eed mulberry, Morus rubra Linnaeus. 



Sycamore, Platanus occidentalis Linnaeus. 



Huisache, Acacia farnesiana (Linnaeus) Willdenow. 



