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JOURNAL OF MAMMALOGY 
climbed higher than any other that came under my observation. When grown 
to manhood, I often went by the tree and estimated the height to which this wood- 
chuck climbed to be at least 30 feet. 
Another incident may be of interest. I had gone home from college to spend 
my vacation with my father. One night about 10 p.m. we heard two dogs in the 
the woods barking as though they had something “treed.” My brother and I 
went to investigate the matter and found the dogs against a steep hillside barking 
up a dogwood tree. In a fork about eight feet from the ground was a large wood- 
chuck. The dogs had probably treed it sometime during the day and were now 
laying siege to it. They had the bark peeled from the tree and were doing their 
best to get the chuck down. 
The last time that I saw a woodchuck up a tree was only a few years ago. I 
had spent the day in the woods collecting plants, and was returning home about 
sunset . On hearing our dog bark I went to the place and found a half grown wood- 
chuck up a shagbark hickory tree. It was eight or ten feet from the ground and 
had secured itself back of one of the stiff, shaggy plates of the bark. From all 
appearances the dog had chased it up the tree sometime earlier in the day. 
Where the burrows of woodchucks are along fences, it is quite a common sight 
to see the animals climbing the posts or rails, perhaps to sun themselves or to make 
observations. To avoid dogs they will climb trees if they cannot reach their bur- 
rows, or escape by some other means. — Oliver P. Medsger, Arlington, New Jersey. 
CONNECTICUT WOODCHUCK CLIMBS A TREE 
In connection with the note on a tree-climbing woodchuck, vol. 2, p. 207, 
I write to say that my brother, F. C. White, saw a woodchuck climb a tree because 
frightened by his dog. He subsequently pointed out to me the limb to which 
the animal had clambered; it was about six feet up from the ground. This was 
at Hartford, Connecticut. — Francis Beach White, Concord, New Hampshire . 
NOTES ON A FEW MAMMALS AT MISSOULA, MONTANA, 1917-1918 
Thomomys fuscus fuscus. Pocket gopher. — ^Mounds are abundant on the 
bunchgrass of the Bitterroot Valley and over the open slopes of the mountains; a 
few occur also among the cottonwoods. June 3, 1918, a few minutes past 4 p.m., 
a half-grown male was found running on the University campus lawn. 
Citellus columhianus. Ground-squirrel. — ’Locally called “gopher.” Abun- 
dant on the bunchgrass; common in yellow pines ; and numerous in the chaparral 
brush on the mountain sides. In 1918 it was first seen April 10. In 13 adult 
females taken between May 4 and 16 on the slopes of Mount Sentinel for use in 
the zoological laboratory, embryos were found as follows : one with 3 embryos 22 
mm. in length, as they lay rolled in the fetal membranes; one with 3 embryos 20 
mm.; one with 3 embryos 16 mm.; one with 4 embryos 13 mm.; three with 4 em- 
bryos each, too small to measure. 
Euiamias sp. Chipmunk. — ^Numerous in cottonwoods, in brush along the canyon 
streams, in yellow pines, and abundant on talus slopes. In 1917 last seen Novem- 
ber 4, and in 1918 first noted April 7. May 19 one was noted eating dandelion seeds 
while seated on a rock pile at the edge of the cottonwood forest along Rattlesnake 
Creek. He would cut off a ripe head and then seating himself on a rock would 
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