The latest news from Mexico, and from our army, represent affairs in a most quaint and ludicrous light, with regard to the policy and movements of all parties. The average progress of the army of invasion appears to be about three miles a day, with no opposition, nor prospect of any; while the Mexicans are tame as bullfrogs, showing no disposition to either fight or run. Gen. Parades having got sick of his job, has suffered himself to be imprisoned at the approach of Santa Anna, who has returned and resumed the government without opposition. Mr. Polk having sent an embassy, virtually asking permission to "give it up," has been refused a hearing, unless he will first withdraw our troops from the Mexican territory; while the Mexican army appointed to combat and conquer Gen. Taylor, remains at ease and content at Mexico, calculating, probably, that the longer they wait, the less distance they will have to travel to encounter the Yankees. Whether our President will call off Gen. Taylor with the American troops, before they reach anywhere in particular, remains to be decided.