General Scott reports the strength of his army at Cerro Gordo at eight thousand five hundred, the killed and wounded four hundred and thirty-one, of which thirty-three were officers and three hundred and ninety-eight enlisted men.  His estimate of the Mexican force was twelve thousand.  The prisoners captured were about three thousand, and the killed and wounded between one thousand and twelve hundred.  Forty-three cannon and three thousand five hundred small arms were captured.  On the morning of the 22d the army moved to and occupied the town and castle of Perote without resistance.

General Santa Anna now retired to Orizaba, where he was met by many distinguished citizens.  He addressed a letter to the ad interim President, General Arroya, as follows: 

“ORIZABA, April 22, 1847.

“MY ESTEEMED FRIEND:  The dispatch which I have forwarded to the Minister of War will already have informed you of the events which occurred on the 18th inst.  The enemy made an extraordinary effort to force the pass, and, exasperated by the repulse he had experienced the day before, and because he knew his ruin was inevitable unless he succeeded, attacked me with his entire army, which was not less than twelve thousand men.  He put everything on the hazard of the die, and the cast was favorable to him.  I do not regard the cause of the nation as hopeless, if it will defend its honor and independence as circumstances may require.  I presume you have taken all proper measures for the public safety, and first of all for that of the capital.  I shall be able to aid it very soon if it will defend itself.  At present I have with me five hundred men and four guns, and there is no doubt but I shall collect in a few days a force equal to that I rallied at Cerro Gordo.  I only require that you send me some money through the medium of bills of exchange, as I find it impossible to raise a dollar.  We must, my friend, not give up ourselves as lost, and, before God, you shall see that I will make no treaty with the enemy which will dishonor us or put us in worse condition.  Write to me when convenient, and reckon always on the poor services of your most affectionate friend, who wishes you every happiness.  A.L.  DE SANTA ANNA.”

The prisoners were all paroled, and the sick and wounded sent to Jalapa, where they were comfortably provided for.

General Scott was impatient at the delay of the Government in sending him re-enforcements.  He feared that his communications with Vera Cruz might be cut off.  The time of enlistment of the twelve months’ volunteers would soon expire, and he desired to discharge them in time to leave the coast before the prevalence of the yellow fever.

He received information on April 27th that some one to two thousand recruits of the ten regiments recently provided for by Congress had been ordered to Brazos, and that every effort would be made to re-enforce General Taylor.  The Secretary of War had ordered troops originally designed for General Scott to the relief of General Taylor, without notice to General Scott.