Fixéronse varios intentos  para

Adposición

  aplicar

Verbo

 rigor  filosófico

Adxectivo

  á

  demarcación

Substantivo

  da

  ciencia

Substantivo

  con

Adposición

 resultados  diversos

Adxectivo

.

Several attempts have been made to apply philosophical rigor to the demarcation of science with diverse results.

Several attempts have been made to apply philosophical rigor to the demarcation of science with diverse results.