1864 John Newlands proposes the law of octaves, a precursor to the periodic law.

With this model Langmuir was able to qualitatively explain the chemical properties of all elements in the periodic table, which were known to largely repeat themselves according to the periodic law.

Periodic reports

periodic report

Combined third and fourth periodic reports and fifth periodic report of Paraguay

Combined third and fourth periodic reports and fifth periodic report of Paraguay (continued)

Fourth periodic report of Mauritius

Second periodic report of Uzbekistan

Third periodic report of Israel

Fifth periodic report of Italy

Fourth periodic report of Yemen

9.4 Periodic revision of laws

However, since the presentation of the State party's third periodic report, not much progress had been achieved in fully incorporating the provisions of the Covenant into domestic law.

As at 1 October 2004, the Committee had received 182 initial, 88 second periodic and 12 third periodic reports.

And so here's the periodic table.

Sixth periodic report of States parties

Fourth periodic report of States parties

Fourth periodic report of Iceland (continued)

Fourth periodic report of States parties

Fourth periodic report of Mauritius (continued)

The tracking of and periodic reports on successful investigations, prosecutions and crime prevention resulting from law enforcement cooperation would assist in identifying gaps and suggesting ways to remedy them.

And I absolutely love the periodic table.

Sixth and seventh periodic reports of Bahrain

For the first six periods of the periodic table, the noble gases are exactly the members of group 18 of the periodic table.

Combined second and third periodic report of India

Combined fourth and fifth periodic reports of Turkey

Combined fourth and fifth periodic reports of Ireland

Initial and second periodic reports of Lebanon (continued)

Combined fifth and sixth periodic reports of States parties

Combined initial and second periodic reports of States parties

Conduct of periodic evaluations of the national financial system.

Argentina fourth periodic report CAT C 55 Add.7

Greece fourth periodic report CAT C 61 Add.1

Switzerland fourth periodic report CAT C 55 Add.9

Finland fourth periodic report CAT C 67 Add.1

Combined fourth and fifth periodic reports of States parties

Combined initial, second and third periodic reports of Benin

The next periodic reconciliation is scheduled for September 2006.

Periodic and comprehensive surveys of stakeholders should be conducted.

Periodic review of statistical programmes to ensure their relevance

Combined fourth and fifth periodic reports of Italy (continued)

Combined initial and second periodic reports of States parties

Combined fourth and fifth periodic reports of Ireland (continued)

Combined fourth and fifth periodic reports of Turkey (continued)

Combined fourth and fifth periodic reports of Turkey (continued)