This document appears to be a table listing elements and their atomic weights. It includes lithium, sodium, potassium, beryllium, magnesium, calcium, boron, aluminum, carbon, silicon, nitrogen, phosphorus, oxygen, sulfur, fluorine and chlorine. The table seems to follow an ordering that is consistent with Dmitri Mendeleev's periodic table of elements.

1. TABLA DE MENDELEIEV<br />Ley de las octavas de Newlands1234567Li6,9Na23,0K39,0Be9,0Mg24,3Ca40,0B10,8Al27,0C12,0Si28,1N14,0P31,0O16,0S32,1F19,0Cl35,5<br />