A correspondent of the Sprirrgfield HepuUican writes aa follows from St. Augustine, Florida, under dato of January 8th: There are five ladies sitting near me in summer attire, and the thermometer stands at seventy-nine clegrees in the shade this third of January. The roses and jonquils aro filling the air with their fragrance, and the birds are cliocring us i with their sweet songs. A walk on the sea, wall would ive as a ligbt breeze and bring us to old Fort San Marco, the most ; ancient building in the United States. It is a Bpanish fort, built in the seventeenth century, and with its raoat, its sallyport, and its Spanish inscription and coat of arms over the entrance, has a very foreign appearance. It is btrilt of coquins, and the eastern side next the sea 3till bears the niarks of the attack of Gen. Oglothorpe. But the strangest of all the attractions at St. Augustine i the delightful cliniate, where the tropical sun never gives ehills and fever or other rnalarious diseasos, but where hoalth and pleasure come with everybreath. Among the guests here is Capt. Harrison, of the United States Coas-t Surrey, who is in command of a company for surveying the eastern coast oí' Florida.