Acta Scientiarum Universitatis Pekiniensis (Naturalum)

ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS PEKINENSIS, Vol. IV, No. 1 1958.

Contents On the Least Prime in an Arithmetical Progression scssscscsssessessss Pan Cheng-tung ( 33 ) On a System of Axioms for the Positive Numbers nae eee s..+- Leng Semen CD -_ On the Mean-Value Theorems of Z,4,( 8 )sc--e-0+ Min Szushow and Yar mensin (50 ) On the Convergence of Series of Positive Tens Pegnte stance scacceeseeeateaers Leng Sen=ming ( 65 ) On Lie Algebras with a Cyclic Nilpotent Derivation................... ss: Ting Shih-sun (87)

Volumetric Determination of Uranium by Reduction with

Stammoms: Chloride. ..ccc-secccesscsesecsssestesussousevstecescoseseves Kao Sheau-shya, Liu Chia-shu, -- Wu Wan=hsien and Lee An-mo (93)

The Early Development of the Common Frog, Rana nigromaculata

O9 eae toe 0a vieeesownlslerecivoccletsie ssi saassvacenns cacsadseneeveesecenececesesseeceenCecasceccceeeneeteesenaaunt sacs Wang Ying-tien (405) Changes in Body Weight and Organ Weights of the Hedgehog in

Hibernation and in Fasting............ Chao I-ping, Yeh Chia-jen and Chien Jui-hsin (117)

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