But the fact, that the slaves in the West Indies do much more work for themselves in a given time than when they work for their masters, may be established almost arithmetically, if we will take the trouble of calculating from authentic documents which present themselves on the subject.  It is surprising, when we look into the evidence examined by the House of Commons on the subject of the Slave Trade, to find how little a West Indian slave really does, when he works for his master; and this is confessed equally by the witnesses on both sides of the question.  One of them (Mr. Francklyn) says, that a labouring man could not get his bread in Europe if he worked no harder than a Negro.  Another (Mr. Tobin), that no Negro works like a day-labourer in England.  Another (Sir John Dalling), that the general work of Negroes is not to be called labour.  A fourth (Dr. Jackson), that an English labourer does three times as much work as a Negro in the West Indies.  Now how are these expressions to be reconciled with the common notions in England of Negro labour? for “to work like a Negro” is a common phrase, which is understood to convey the meaning, that the labour of the Negroes is the most severe and intolerable that is known.  One of the witnesses, however, just mentioned explains the matter.  “The hardship,” says he, “of Negro field-labour is more in the mode than in the quantity done.  The slave, seeing no end of his labour, stands over the work, and only throws the hoe to avoid the lash.  He appears to work without actually working.”  The truth is, that a Negro, having no interest in his work while working for his master, will work only while the whip is upon him.  I can no where make out the clear net annual earnings of a field Negro on a sugar plantation to come up to 8 l. sterling.  Now what does he earn in the course of a year when he is working for himself?  I dare not repeat what some of the witnesses for the planters stated to the House of Commons, when representing the enviable condition of the slaves in the West Indies; for this would be to make him earn more for himself in one day than for his master in a week.  Let us take then the lowest sum mentioned in the Book of Evidence.  This is stated to be 14d. sterling per week; and 14d. sterling per week would make 3 l. sterling per year.  But how many days in the week does he work when he makes such annual earnings?  The most time, which any of the witnesses gives to a field slave for his own private concerns, is every Sunday, and also every Saturday afternoon in the week, besides three holidays in the year.  But this is far from being the general account.  Many of them say that he has only Sunday to himself; and others, that even Sunday is occasionally trespassed upon by his master.  It appears, also, that even where the afternoon is given him, it is only out of crop-time.  Now let us take into the account the time lost by slaves in going backwards and forwards to their provision-grounds;