The Express. — 1851-06-09 (London, England)

WEST INDIA AND MEXICAN MAILS.  The Royal West India mail packet Dee, Captain Allan, from the West Indies, &e., arrived at South. ampton, yesterday, and landed her mails under the charge of Lieut. John Hay, R.N., Admiralty .agent. Her dates are :--Vera Cruz, May 7; Tampico, 4 ; Chagres, 10; Carthagena, 12; Jamaica, 14; Home. tara, 12; Trinidad, 12; Burbadoes, 14 ; Antigua, 14; Martinique, 15; Grenada, 13; Porto Rico, 17; St. Thomas, 19; La Guavra, 10. The Dee brings; 105 passengers, among whom arc Commodore Bennet, General Sir John Fitzgerald, and two aides-do-camp„ The freight on board consists of 903,013 dots. from Tampico, Vera Cruz, and Chagres, whereof 51,000 dots. is on account of Mexican dividends ; gold, 128,581 dots. ; British coin and platina, 20,033 dole.; 137 scrons of cochineal; 18 tierces and ti; barrels of coffee ; 27 serous of indigo.  Everything appears very quiet in the city of M...xico. The government are fixed, and some confidence is placed in them. Money is very scarce, and cash received at very high interest. Very few merchant vessels either at Tampico or Vera Cruz. The native and all the foreign merchants most seriously regret the steam packets do nut as formerly run between the Havannah and the two ports in the Gulf; both the post-office and the company lose by it. The Mexican route must sooner or later be altered, or the Americans will carry all before them. The harbour of San Juan (Grey Town), about which there has been so much diplomacy and fighting, is fast filling up, there being scarcely more water than i. sufficient for the present class of West Indian steamers; and it is reasonably conjectured that, unless prompt measures be adopted, it will be in vain to expect the larger class of vessels now in progress to attempt the navigation of the harbour in question. An intelligent officer of the Engineers (U.S.), who is fully conversant with the locale, gives it as his opinion that the stopping up of what is called the " Colorado" branch of the river would have the effect of deepening the channel at the entrance of the harbour.  The railroad from Navy Bay to Panama is progressing as well as the heat of the climate and want of labour will permit. The packets on their leaving Carthagcna are now in the habit of taking to Cha. gres a quantity of labourers for the work. Then people are chiefly from the interior. There appears to be a very destructive insect peculiar to the country which makes fearful havoc in all the timber constructions of the rail w.:y. About three miles of the line is completed. The Arne! jean steamers continue embarking from Chaves large numbers of passengers leaving Cali. forma for the States: the usual average number is 330 per packet, and fur exceeding what arc landed at Chagres for California. Many of these persons are penniless, doubtless owing to their gambling pro. pensities- whilst the more provident appear to succeed well, if one can judge by the numerous bags of gold, the contents of which are often exhibited to the officers of the steamers. We regret to say that [robberies and murders are now of frequent occur. rene° whilst the travellers arc crossing the Isthmus.