'Ml/. t go who could not stnnd a long mareh, were not perfectly willing. In consequence of this, the volunteer regiments that left were much reduced, very few of them exceeding five hundred men, some less. The regiments are one of them from Tennesse, one from Ohio, one from Texas,(Hays’) the Baltimore battalion, a part ot the Texas infantry, reorganized’ and MeCullouglds and Gillespie’s Rangers.An express was received at Camargo on the5th imt., from Genarai Worth, stating that he had received information that Gen. Aropudia had arrived at Monterey, with about three thousand troops, which would increase the force of that place to upwards of 4000 men. Some doubts of the authenticity of the news were expressed at Matamoras, as we learn by letters we have received thence; but we see no reason to doubt it. TheMexican papers hove announced, that he had been appointed to the “command of the army of the North,” and utiifomly mention Monterey as the point at which the troops are to be concentrated. One letter we have seen seta down the force with which AmpuiKa entered Monterey, at from 5,000 to 10,000 men. It add?, that he had issued a proclamation prohibiting ell intercourse between theMe xicans and American army under thepain of death.