=====+=================================+================================= | Original record | Record(s) of recapture +---------------+--------+--------+---------------+--------+-------- | | Snout- | | | Snout- | Sex | | vent | | | vent | | Date | length,| Weight,| Date | length,| Weight, | | milli- | grams | | milli- | grams | | meters | | | meters | -----+---------------+--------+--------+---------------+--------+-------- [M] | Aug. 17, 1959 | 223 | 5.3 | Sept. 12, 1960| 503 | 42 [F] | Oct. 26, 1959 | 278 | 10 | Oct. 26, 1959 | 566 | 55 [F] | Nov. 2, 1959 | 340 | 18 | May 11, 1961 | 582 | 65 [F] | Nov. 10, 1959 | 348 | 13.7 | June 20, 1961 | 733 | 127 [F] | Oct. 19, 1952 | 361 | 15.3 | Oct. 9, 1953 | 620 | 68 [M] | May 9, 1953 | 368 | 17 | May 13, 1954 | 609 | 84 [F] | April 16, 1950| 328 | 142 | Oct. 10, 1950 | 603 | 78.2 [F] | May 17, 1956 | 358 | 15.2 | Oct. 6, 1956 | 575 | 52 [M] | Nov. 1, 1953 | 330 | 11 | May 21, 1955 | 674 | 92 -----+---------------+--------+--------+---------------+--------+-------- Though covering a wide size-range, the young of the year entering hibernation are still a distinct size group, not yet overlapping that of the next older group of young. Growth during the first year of life is best shown by the individuals in Table 12, all of which were marked either before their first hibernation or soon after emerging from it, and were recaptured either the following autumn, or in spring soon after emerging from a second hibernation. These records indicate that the young racers at the time of their second hibernation have grown to a snout-vent length of well over 500 millimeters, but less than 700 millimeters, and a weight of more than 40 grams but less than 100 grams. Other racers marked in the first few weeks of life were recaptured after two or more seasons of growth, and indicate the sizes that may be expected in young adults from two to five years old, as shown in Table 13. Table 13. Growth of Racers Marked at an Age of Less Than One Year and Recaptured in Their Second, Third or Fourth Years Column headings: A: Snout-vent length in mm. B: Weight in grams C: Probable age in months