MAMMALS OF THE MEXICAN BOUNDARY. '21 



night. Finding the supply of water almost exhausted, we proceeded 

 to Seven Wells, Salton River, Lower California, which we reached 

 April 8, making our camp there until April is. While at Seven 

 >\'i-l 1 >- the Salton River was explored for a distance of 24 kilometers 

 (15 miles) to the westward. 



April IS t<> 27, is!). 1 !. — On the morning of April is camp was re- 

 moved to a beautiful mesquite bower on the bank of Gardners 

 Laguna, where we remained until the 27th, making collections on the 

 lagoon and along the Salton River. This station was about 10 kilo- 

 meters (6 miles) south of Monument No. 210. 



April 27 to Mini 3, 1S<).' 4 . — We moved from Gardners to Laguna del 

 Alamo, on Salton River, near Monument No. 217, April 27, and the 

 next day marched along the Boundary Line over a stretch of desert 

 land lying partly below sea level, to Unlucky Lake, a large, shallow- 

 lagoon of New River, which, like the Salton River, is formed by an 

 overflowing and backing up of the waters of the Colorado River. 

 We remained at Unlucky Lake from April 28 to May 3. 



May 3 t<> 6, 1894- — May 3 the march was resumed, and the course 

 of New River was followed to Laguna Station, where we stayed until 

 May G. A trip from Laguna Station to Mesquite Lake, between 

 Salton and New rivers, was made and the experience proved a trying 

 one. Mesquite Lake was dry and Laguna nearly so. 



May to 10, 1S94- — Leaving the New River at Laguna Station, 

 where it turns and flow T s north, on the evening of May 6, we made the 

 march across this desert during the night, stopping for a few hours' 

 rest at Coyote Wells, soon after dawn resuming the journey to the 

 eastern base of the Coast Range Mountains, where we camped at the 

 first water found, in a narrow canyon on the road to San Diego by 

 way of Mountain Spring. Here we obtained good drinking water for 

 the first time in a month. The heat was so intense that the animals 

 eagerly sought the shadows of rocks, and the men sought shelter from 

 the sun in caves. May 8 was spent in collecting about the eastern base 

 of the Coast Range, and camp was moved up the slope to Mountain 

 Spring (altitude 775 meters, or 2,543 feet) on May '.». We remained 

 at Mountain Spring until the 16th, during which time the summits 

 and eastern slopes of the Coast Range were explored. 



May tc> to 31, 1894- — Being desirous of securing some of the alpine 

 species of mammals, camp was made for the night of May L6 on the 

 west slope, near the summit of the Coast Range, for the purpose of 

 trapping. During the afternoon of May 17 we proceeded to 

 Jacumba Hot Springs, in San Diego County. California, close to 

 Monument No. 233. From the 17th to the 31st of May collections 

 were made in the vicinity of Jacumba on both sides of the Boundary 

 and east to the Coast Range summits. 



