The fundamental characteristics of the race, which constitute the unvarying source from which all our sentiments spring, always exert an influence on the irritability of crowds, their impulsiveness and their mobility, as on all the popular sentiments we shall have to study. All crowds are doubtless always irritable and impulsive, but with great variations of degree. For instance, the difference between a Latin and an Anglo-Saxon crowd is striking. The most recent facts in French history throw a vivid light on this point. The mere publication, twenty-five years ago, of a telegram, relating an insult supposed to have been offered an ambassador, was sufficient to determine an explosion of fury, whence followed immediately a terrible war. Some years later the telegraphic announcement of an insignificant reverse at Langson provoked a fresh explosion which brought about the instantaneous overthrow of the government. At the same moment a much more serious reverse undergone by the English expedition to Khartoum produced only a slight emotion in England, and no ministry was overturned. Crowds are everywhere distinguished by feminine characteristics, but Latin crowds are the most feminine of all. Whoever trusts in them may rapidly attain a lofty destiny, but to do so is to be perpetually skirting the brink of a Tarpeian rock, with the certainty of one day being precipitated from it. 2. THE SUGGESTIBILITY AND CREDULITY OF CROWDS. When defining crowds, we said that one of their general characteristics was an excessive suggestibility, and we have shown to what an extent suggestions are contagious in every human agglomeration; a fact which explains the rapid turning of the sentiments of a crowd in a definite direction. However indifferent it may be supposed, a crowd, as a rule, is in a state of expectant attention, which renders suggestion easy. The first suggestion formulated which arises implants itself immediately by a process of contagion in the brains of all assembled, and the identical bent of the sentiments of the crowd is immediately an accomplished fact. As is the case with all persons under the influence of suggestion, the idea which has entered the brain tends to transform itself into an act. Whether the act is that of setting fire to a palace, or involves self-sacrifice, a crowd lends itself to it with equal facility. All will depend on the nature of the exciting cause, and no longer, as in the case of the isolated individual, on the relations existing between the act suggested and the sum total of the reasons which may be urged against its realisation.