The anti-slavery party was very strong, and although it is not stated that they took "Perish the colonies!" for their motto, it is very certain that they cared little about the future of either white or black as long as they carried their object. To this end every possible case of oppression and ill-treatment was exaggerated, and spoken of as if it were common, notwithstanding that the case only came to their notice through the trial and punishment of the offender. The fact was the planter could not afford to ill-treat his slave—no other animal of his live stock was of so much value. If a valuable horse were killed another could be obtained to replace him, but this was almost impossible in the case of the negro. Formerly, when he cost about £20, it might have paid to work him to death; now that his price was five or six times as much, self-interest alone prevented ill-treatment. There was a strong public opinion in every colony which prevented cruelty, and there were societies in some which gave prizes to those in charge of estates who raised the greatest number of children in proportion to their negroes. This breeding of negroes was necessarily very slow work, and did little to make up for the stoppage of importation. It followed, therefore, that every year the amount of available labour became less.

In 1815 the anti-slavery party commenced a further agitation in favour of the negro, with the result that a Registrar of slaves was appointed for each colony, and ultimately a Protector. By obtaining an annual census they hoped to have some check on the decrease, and at the same time see if any Africans were surreptitiously imported. In some places there was already a slave registration for the purpose of adjusting the head-tax; here the planters did not oppose the measure, although they resented interference. Others, like Barbados, protested against the innovation as something quite unnecessary, or even if desirable, not to be imposed upon them from outside. This led to a great deal of discussion at the planters' tables, where the slave waiters listened to what was said, and from thence carried garbled reports to the others.

In every colony were numbers of free negroes and coloured people, some of whom were loafers and spongers on the slaves, while others went about the country peddling. Having nothing to do, they became the news-carriers and circulators of garbled reports. In 1815 there lived in Barbados a free coloured man named Washington Franklin, who, like many negroes, was possessed of a good memory and a great power of declamation. Getting hold of the English and colonial newspapers, he would read the speeches of Wilberforce and others, and after putting his own construction on them, retail them in language tending to rouse the slaves. To him was due an impression that prevailed in Barbados, probably from a misunderstanding of the Registry Bill, that they were all to be free at the beginning of the year 1816. When New Year's Day had passed they became dissatisfied, believing that their masters had received orders to set them free, but would not execute them. They had heard of the successful rising in Hayti, and were determined to attempt a similar revolt in Barbados.

After waiting for the expected freedom until the 14th of April, they determined on that day to have a general rising, which was signalled by burning heaps of cane-trash in the parish of St. Philip. Soon the fields were set on fire, and frenzied mobs, continually increasing in numbers, went from one plantation to another seeking arms. This went on for two days, but on the arrival of the militia they dispersed, leaving a waste behind. As usual a great many of the negroes were executed, although it does not appear that any whites got killed in the revolt. However, the Registry Act was delayed for two years, to be ultimately passed in January, 1817.

Towards the end of the last century a new class of men appeared in the West Indies—the Protestant missionaries. Catholic missions had been established in the Spanish possessions since the time of Columbus, but hitherto, with the exception of a few Moravians, no other Church had done anything to convert the slaves in the British colonies. Between 1780 and 1790, Methodist societies were established in most of the islands, notwithstanding the opposition of the planters, who in some cases appear to have thought that baptized Christians could no longer be held in slavery. This vulgar error, however, was not the real cause of the antagonism to these teachers, but rather the feeling natural to a master which makes him resent any outside interference between himself and his servants. The best and kindest were the first to feel this. The slaves were their children, and to them they applied, in all their troubles and difficulties, as to a great father. It followed, therefore, that when the missionaries came and proclaimed themselves friends to the slaves, giving them advice in secular as well as religious matters, the cordial feeling was broken. "Massa" was much put out, for he liked to hold the position of a little god to these poor ignorant creatures over whom he held such power. The slaves were sometimes whipped as bad children when they did wrong, and as children they cared little for a flogging. It is easily conceivable that a humane missionary might feel more pain at witnessing such a punishment than the culprit himself, but it is a fact that cruel punishment was never mentioned by the slaves as an excuse for a revolt.

The missionaries were shocked at the apparent nakedness and destitution of the negroes, as a visitor to the West Indies will be even now. They did not remember that their clothing and houses were well suited to the climate, and that a home in the English sense of the word would not have been appreciated by them. These things were reported to the societies at home, the members of which knew no more about the tropics than the merchant who once sent a consignment of warming-pans to Barbados. Those who wanted to raise a cry of cruelty to the poor slave, circulated these facts, and put their own construction upon them, one going so far as to state that there were no chimneys to the houses, as if this omission were a slave disability or oppression, although any visitor to the colonies could have told him that these conveniences were hardly found anywhere.

The negro willingly listened to his friend the missionary, and felt eager to perform the rites and ceremonies of the little congregation. The Established Church was that of England, and although in some places there were special services for the blacks, in others "slaves and dogs" were refused admission. This exclusiveness threw the slaves into the hands of the Moravians, Baptists, Methodists, and the agents of the London Missionary Society. The Church government of some of these was in the hands of the congregation, and as this was a sort of playing at "Massa," the slave took to them all the more readily.

No doubt these ministers were very good men, and animated by a great love for the negroes, but this did not prevent their being misunderstood by both master and slave. Then many of them were connected with the anti-slavery society, and however careful they might be not to offend local prejudices, by speaking against the obnoxious system, as conscientious men they could not help showing their bias. The established clergymen, on the contrary, when they preached to the slaves, told them to "be subject to the powers that be," and to remain content in the condition where Providence had placed them.

At first most of the planters only sneered at these attempts to convert the slaves, but when they saw what an attraction the chapels became, they opposed them openly. Gangs of young fellows would attend, and sometimes break up the meetings by jeering at the preacher. In 1807 an ordinance was passed in Jamaica "for preventing the profanation of religious rites and false worshipping of God, under the pretence of preaching and teaching, by illiterate, ignorant, and ill-disposed persons, and of the mischief consequent thereupon." Considering it the first duty of all magistrates to encourage the solemn exercise of religion, and whereas nothing tended more to bring it into disrepute than the pretended preaching and expounding of the Word of God by ignorant persons and false enthusiasts, to persons of colour and slaves, it was enacted that, after the 1st of July, no unauthorised person should presume to teach, preach, offer public prayer, or sing psalms to any assembly of these people, on pain of a fine of a hundred pounds, imprisonment for six months, or whipping. Similar punishments were also to be inflicted on any one preaching in an unlicensed building, as well as on the owner of a house or yard in which it had been permitted.

Another way of stopping the assembly of slaves was to pass a law against their meeting at night, and punish them if they left the estate without a written permission. There were always excuses for this apparent harshness, as plots had been arranged at nocturnal meetings, some of which had given a great deal of trouble. Even if a pass were granted to attend chapel, the estate's authorities could hardly be expected to follow and see that the slave did not go elsewhere. The missionaries took it that all this was done to hamper their work, but such was not the case altogether.