MAMMALS OP THE MEXICAN BOUNDARY. 21 



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

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

 April 8, making our camp there imtil April 18. "While at Seven 

 Wells the Salton Eiver was explored for a distance of 24 kilometers 

 (15 miles) to the westward. 



April 18 to 27^ 1894- — On the morning of April 18 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 Eiver. This station was about 10 kilo- 

 meters (6 miles) south of Monument No. 216. 



April 27 to 21 ay 3, 189 Jp. — We moved from Gardners to Laguna del 

 Alamo, on Salton Eiver, 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 Eiver, which, like the Salton Eiver, is formed by an 

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

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



May 3 to 6, 189^. — May 3 the march was resumed, and the course 

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

 May 6. 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. 



3Iay 6 to 16, 1894. — Leaving the New Eiver at Laguna Station, 

 where it turns and flows north, on the evening of May 6, Ave 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 Eange 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 Eange, and camp was moved up the slope to Mountain 

 Spring (altitude 775 meters, or 2,543 feet)' on May 9. We remained 

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

 and eastern slopes of the Coast Eange were explored. 



May 16 to 31, 189^. — Being desirous of securing some of the alpine 

 species of mammals, camp was made for the night of May 16 on the 

 west slope, near the summit of the Coast Eange, 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 31?t of May collections 

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

 and east to the Coast Eange summits. 



