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Microtus were numerous in the alfalfa fields down about 4 miles, then a mile of salt grass and grease brush intervened where there were few or none. Then a big alfalfa field had no mice except a few here and there along the ditch banks. Over the flat salt ground there was no trace of mice but on the mounds out near the mud flats there were a few fresh burrows & trails, about the normal number for such localities. There are no tules at this end of the lake until far out in the water. Last spring the water was unusually high and came up among the ranches but had gone back to near its normal level.

The mice evidently have [[strikethrough]] evidently[[/strikethrough]] entered the alfalfa fields from surrounding country and multiplied under the favorable food and cover. It evidently is not a migration, as desert country surrounds the valley. They are said to be numerous also up at Winnamucca & Battle Mountain.

Large flat mounds are seen over much of this flat valley