Question Relating to Prime Numbers

@article{WatsonQuestionRT,
  title={Question Relating to Prime Numbers},
  author={G N A Watson},
  journal={Nature},
  volume={103},
  pages={364-365}
}
THE reply to Mr. Mallock's inquiry in NATURE of June 19 is that if n denotes the mth prime number (counting from unity), then the ratio of m to n/loge n tends to unity as m tends to infinity. It follows that an approximate expression for n is m loge m.