1916] Kellogg: Mammals and Birds of Northern California :D:5 



1500 feet difference between it and Jackson Lake, but the differ- 

 ence in temperature and the character of the surroundings was 

 very marked. Here we were in full summer, while there it was 

 spring. Just above our camp was a deer lick well known to our 

 guide, and he told great talcs of the deer he had seen in that Lick. 

 The zone may be considered Transition, but this diagnosis was 

 based more upon the vegetation than upon the animal life, for 

 we found here several Boreal mammals which thus ranged well 

 down into the Transition, Zapus for example. 



Saloon Creek Divide. — On July 9, iiiss Alexander and 1 made 

 a trip back to Saloon Creek Divide, staying one night and putting 

 in the afternoon and morning in collecting. This divide, of 6850 

 feet altitude, forms part of the line between Trinity and Siskiyou 

 counties. On the northern, Siskiyou, side, which is almost devoid 

 of trees, a descent of about 500 feet brings one to a small stream 

 fed from the snow banks of the divide (see pi. 15, fig. 2). Here we 

 had seen numerous holes of the golden-mantled ground squirrel, 

 and it was to collect some of these that we made the trip up from 

 the North Fork. The southern side is equally steep, but covered 

 thickly with ceanothus brush. We camped on the north side in a 

 grove of red fir and devoted our collecting to ground squirrels and 

 chipmunks. This was the first time we had ever found such a 

 colony of the former (Callospermophilus). Their burrows were 

 under every rock, as well as out in the open, and we could see 

 many of the animals running about or sunning themselves on the 

 rocks. We expected to find .Vie rat as and Zapus in the alders along 

 the stream, but the ground had been so beaten down by cattle that 

 the smaller mammals had evidently not thriven. 



After twelve days on the North Foi'k, we started out again, fol- 

 lowing up the creek and then striking across a 6100-foot divide 

 and down gradually to the main Coffee Creek. We camped the 

 night of July 11 about a mile above its junction with Union Creek. 

 The next day we proceeded up the creek to the Salmon Flats, large 

 mountain meadows which form a low divide between Trinity and 

 Siskiyou counties. The ascent was a gradual one and the vegeta- 

 tion abundant at the divide itself. Cottonwoods attain an immense 

 size in the moist creek bottomland, and willows form dense thickets 

 on either side of the stream. From the divide we went up the 

 South Fork of the Salmon River about two miles and camped in 



