Not only do conjunctions in certain cases couple words, but in so doing they manifest the dominion of mental laws and the operation of mental processes, which, though never yet recognised by grammarians and logicians, form an indispensable part of the only basis upon which logic as a science can rest. And however strange the assertion may appear, I do not hesitate to affirm that the science thus established is a mathematical one. I do not by this mean that its subject is the same as that of arithmetic or geometry. It is not the _quantitative_ element to which the term is intended to refer. But I hold, with, I believe, an increasing school of mathematicians, that the processes of mathematics, as such, do not depend upon the nature of the subjects to which they are applied, but upon the nature of the laws to which those subjects, when they pass under the dominion of human thought, become obedient. Now the ultimate laws of the processes which are subsidiary to general reasoning, such as attention, conception, abstraction, as well as of those processes which are more immediately involved in inference, are such as to admit of perfect and connected development in a mathematical form alone. We may indeed, without any systematic investigation of those laws, collect together a system of rules and canons, and investigate their common principle. This the genius of Aristotle has done. But we cannot thus establish _general methods_. Above all, {181} we cannot thus establish such methods as may really guide us where the unassisted intellect would be lost amid the complexity or subtlety of the combinations involved. How small, for instance, is the aid which we derive from the ordinary doctrines of the logicians in questions in which we have to consider the operation of mixed causes and in various departments of statistical and social inquiry, in which the intellectual difficulty is almost wholly a logical one. For the ground upon which some of these statements are made, I must refer to my recently-published work on the _Laws of Thought_. I trust to your courtesy to insert these remarks, and apologise for the undesigned length to which they have extended. G. BOOLE. Queens College, Cork. * * * * * ROBERT BLOET. (Vol. ix., p. 105.) Robert, Earl of Moreton, and Odo, Bishop of Bayeux, the Conquerors uterine brothers, both accompanied William, acting conspicuous parts on his invasion of England in 1066. The former died about 1090. Odo had been elected Bishop as far back as 1049. In 1088 he headed a conspiracy against William II.; but being defeated at Rochester, retired to Normandy. The time of his death is uncertain, but is supposed to have occurred in 1096. The first notice of Robert Bloet's name, is as a witness to one of the charters of William II. to the monastery of Durham, granted in 1088 or 1089. He was appointed Chancellor in 1090, consecrated Bishop of Lincoln in 1093, and died in 1123.