One of the principal characteristics of Rio is slavery. Slaves here perform the work of beasts of burden; and in the business parts of the city the attention of a stranger is sure to be arrested by gangs of them heavily laden, proceeding at a jog-trot, timing their steps to a monotonous song and the noise of a tin rattle filled with stones, carried by their leader. What their domestic condition and treatment may be, I know not, but, among the slaves one sees out of doors, the frequency of iron collars round the neck, and even masks of tin, concealing the lower part of the face, and secured behind with a padlock, would seem to indicate extreme brutality in those capable of resorting to such means of punishment. Yet these, I was told, were rare exceptions, the Brazilians not being worse task-masters than the people of other slave-holding countries--and such may be the case. RELIGIOUS PROCESSIONS. Whatever he may think of the true state of religious feeling, it soon becomes obvious to a stranger that great care is taken to celebrate the numerous festivals of the Church with all possible pomp and splendour. One day I happened to encounter a procession in honour of St. Januarius, the patron saint of Rio. The number of ecclesiastics taking a part amounted to several hundreds, and a body of military brought up the rear. The streets and windows were crowded with people in their holiday costume, bands of music were playing, bells were ringing, flowers were scattered about and showered down from the houses. The profusion of tinsel and embroidery was very great, and the balconies and windows in the line of procession were hung with rich brocade in all the colours of the rainbow. BRAZILIAN CHARACTER. A short stay, such as ours, afforded very limited opportunities of judging of the national character; and my impressions on this point were, probably, often erroneous. The Brazilians and English did not then reciprocate very cordially, on account of the existing state of international relations. Of late years great advances appear to have been made upon the mother-country, judging from the increasing liberality of their institutions, the establishment of commercial relations abroad, the freedom of discussion and influence of the press, the attention paid to public education (especially of the middle classes) the support granted to literature and science, and the declining influence of the priesthood in secular matters. The national character, however, can scarcely be considered as fully formed; the Brazilians have been too recently emancipated from the thraldom of a modified despotism to have made, as yet, any very great progress in developing the elements of national prosperity and greatness which the vast empire of Brazil so abundantly possesses, and the foul blot of slavery, with its debasing influence, still remains untouched. CROSS THE SOUTH ATLANTIC.