British reptiles and batrachians . is segmentation of the egg was only a matter of a few has been known to occur in four hours in a high temperature-Bell, the author of British Reptiles, records very careful ob-servations of these various changes made by Rusconi, who foundthat in a temperature of from 730 to 8o° tadpoles were hatchedin four days ; but as in an English spring that temperature israrely reached, much less continued, Bell reckoned about a monthfor hatching, and probably another month for the entire meta-morphosis, dependent again on the season after a la
British reptiles and batrachians . is segmentation of the egg was only a matter of a few has been known to occur in four hours in a high temperature-Bell, the author of British Reptiles, records very careful ob-servations of these various changes made by Rusconi, who foundthat in a temperature of from 730 to 8o° tadpoles were hatchedin four days ; but as in an English spring that temperature israrely reached, much less continued, Bell reckoned about a monthfor hatching, and probably another month for the entire meta-morphosis, dependent again on the season after a late and coldspring. Some spawn deposited about the 12th March I keptin a temperature averaging 500 ; that is, at night below 500, andin the day-time above. The bowl was placed in a window wherethe morning sun on one or two occasions for an hour or twobrought the temperature to 700. But the weather was, for themost part, chilly and sunless, and during five weeks there wasonly a very slightly perceptible change in the eggs. Under a. ID H 3 H Vi J3 be
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Keywords: ., bookcentury1800, bookdecade1880, bookidbritishrepti, bookyear1888
