Dec. 14--British horse-transport ship "Russian" sunk in Mediterranean by submarine (17 Americans lost).

Dec. 20--President Wilson's peace note (dated Dec. 18). Germany replies (Dec. 26). Entente Allies' reply (Jan. 10) demands "restorations, reparation, indemnities."

1917.

Jan. 10--The Allied Governments state their terms of peace; a separate note from Belgium included.

Jan. 11--Supplemental German note on views as to settlement of war.

Jan. 13--Great Britain amplifies reply to President's note of Dec. 18.

Favors co-operation to preserve peace.

Jan. 22--President Wilson addresses the Senate, giving his ideas of steps necessary for world peace.

Jan. 31--Germany announced unrestricted submarine warfare in specified zones.

Feb. 3--United States severs diplomatic relations with Germany; Bernstorff dismissed.

Feb. 12--United States replies to Swiss Minister that it will not negotiate with Germany until submarine order is withdrawn.

Feb. 18--Italians and French join in Albania, cutting off Greece from the Central Powers.

Feb. 24--Kut-el-Amara taken by British under Gen. Maude (campaign begun Dec. 13).

Feb. 26--President Wilson asks authority to arm merchant ships.

Feb. 28--"Zimmerman note" revealed.

Mar. 4--Announced that the British had taken over from the French the entire Somme front; British held on west front 100 miles, French 175 miles, Belgians 25 miles.

Mar. 11--Bagdad captured by British under Gen. Maude.

Mar. 11-15--Revolution in Russia, leading to abdication of Czar Nicholas II (Mar. 15). Provisional Government formed by Const.i.tutional Democrats under Prince Lvov and M. Milyukov.

Mar. 12--United States announced that an armed guard would be placed on all American merchant vessels sailing through the war zone.

Mar. 17-19--Retirement of Germans to "Hindenburg line." Evacuation of 1,300 square miles of French territory, on front of 100 miles, from Arras to Soissons.

Mar. 22--United States formally recognized the new government of Russia set up as a result of the revolution.

Mar. 26--The United States refused the proposal of Germany to interpret and supplement the Prussian Treaty of 1799.

Mar. 27--Minister Brand Whitlock and American Relief Commission withdrawn from Belgium.

Apr. 2--President Wilson asks Congress to declare the existence of a state of war with Germany.

Apr. 6--United States declares war on Germany.

Apr. 8--Austria-Hungary severs diplomatic relations with the United States.

Apr. 9-May 14--British successes in Battle of Arras; (Vimy Ridge taken Apr. 9).

Apr. 16-May 6--French successes in Battle of the Aisne between Soissons and Rheims.

Apr. 20--Turkey severs relations with United States.

May 4--American destroyers begin co-operation with British navy in war zone.

May 15-Sept. 15--Great Italian offensive on Isonzo front (Carso Plateau). Capture of Gorizia, Aug. 9. Monte Santo taken Aug. 24. Monte San Gabrielle, Sept. 14.

May 15--Gen. Petain succeeds Gen. Nivelle as commander in chief of the French armies.

May 17--Russian Provisional Government reconstructed. Kerensky (formerly minister of justice) becomes minister of war.

May 18--President Wilson signs selective service act.

June 3--American mission to Russia lands at Vladivostok ("Root Mission"). Returns to America Aug. 3.

June 7--British blow up Messines Ridge, south of Ypres, and capture 7,500 German prisoners.

June 10--Italian offensive on Trentino.

June 12--King Constantino of Greece forced to abdicate.

June 15--Subscriptions close for first Liberty Loan ($2,000,000,000 offered; $3,035,226,850 subscribed).

June 26--First American troops reach France.

June 29--Greece enters war with Germany and her allies.

July 1--Russian army led in person by Kerensky begins a short-line offensive in Galicia, ending in disastrous retreat (July 19-Aug. 3).

July 4--Resignation of Bethmann Hollweg as German chancellor. Dr. George Michaelis, chancellor (July 14).

July 20--Drawing at Washington of names for first army under selective service.

July 20--Kerensky becomes premier on resignation of Prince Lvov.

July 30--Mutiny in German fleet at Wilhelmshaven and Kiel. Second mutiny Sept. 2.

July 31-Nov.--Battle of Flanders (Pa.s.schendaele Ridge); British successes.

Aug. 10--Food and fuel control bill pa.s.sed.

Aug. 15--Peace proposals of Pope Benedict revealed (dated Aug. 1).

United States replies Aug. 27; Germany and Austria, Sept. 21; supplementary German reply, Sept. 26.

Aug. 15--Canadians capture Hill 70, dominating Lens.