The social condition of mankind is also profoundly affected by climatic and other external circumstances. The intense cold of the Arctic and Antarctic regions is fatal to anything approaching a developed form of civilisation. Intense heat, on the other hand, although not incompatible with a certain degree of progress, is unfavourable to its permanence;[[12]] the extinct societies of the tropics, such as Cambodia, Mexico and Peru, affording instances of the operation of this law. It is impossible for man to get beyond the nomad state in the vast deserts of Northern Africa; and the extreme moisture of the atmosphere in other portions of the same continent puts an effectual check on anything like social advance. In some parts of the world social development has been hindered by external circumstances of another character, such as the want of wood, the scarcity of animals, the absence of edible fruits. In fact, it is only within a comparatively temperate zone that human society has been able permanently to assume highly complex forms and to build itself up on an extensive scale. In this zone, climate, while favouring man up to a certain point, has at the same time compelled him to eat bread in the sweat of his brow. It has compelled him to enter into conflict with natural obstacles, the result of which has been to call forth his powers of industry, of energy, of self-reliance, and to sharpen his intellectual faculties generally. In addition to exercising and strengthening these personal attributes, the climatic influences of what has been called the zone of civilisation have brought man's social characteristics more fully and elaborately into play. The nature of these influences has forced him to cooperate more or less closely with his fellows; while each step in the path of cooperation has involved him in another of a more complex kind. The growth of social cooperation is not necessarily accompanied by a corresponding development of the moral sentiments; increased cooperation in some cases involving a distinct ethical loss. In many directions, however, highly organised societies tend to evolve loftier types of morality; and it is in harmony with the facts to say that the highest moral types are not to be found where nature does most or where it does least in the way of providing food and shelter for man.
It is also interesting to observe the effect which climate, through the agency of religion, has had upon human conduct. One of the main factors in the origin of religion is the feeling of dependence upon nature so strongly manifested in all primitive forms of faith. The outcome of this feeling of dependence was to exalt the forces of nature into divinities, and man's conception of these divinities, shaped as it was by the attitude of nature around him, had an incalculable influence on his life and actions. The remains of this influence are still visible in the aesthetic effects which the forces and operations of nature produce on civilised man; in all other respects it has to a large extent passed away.[[13]]
We have now touched upon most of the ways in which external surroundings have had a hand in shaping the course of human life in the past; it will be our next business to inquire whether these surroundings have any effect upon human conduct at the present day, and especially upon those manifestations of conduct which are known as crimes. That they still have an effect is an opinion which has long been entertained.
Going back to the ancient Greeks, we find Hippocrates holding that all regions liable to violent changes of climate produced men of fierce, impetuous and stubborn disposition. "In approaching southern countries," says Montesquieu, "one would believe that morality was being left behind; more ardent passions multiply crimes; each tries to gain from others all the advantages which can minister to these passions." Buckle believes that the interruption of work caused by instability of climate leads to instability of character. In analysing the contents of French statistics, Quetelet,[[14]] while admitting that other causes may neutralise the action of climate, proceeds to say that the "number of crimes against property relatively to the number of crimes against the person increases considerably as we advance towards the north." Another eminent student of French criminal statistics, M. Tarde, comes to very much the same conclusions as Quetelet; he admits that a high temperature does exercise an indirect influence on the criminal passions. But the most exhaustive investigations in this problem have been undertaken in Italy, by Signor Enrico Ferri. After a thorough examination of French judicial statistics for a series of years, Ferri arrives at the conclusion that a maximum of crimes against the person is reached in the hot months, while, on the other hand, crimes against property come to a climax in the winter.[[15]]
In testing these opinions respecting the influence of climate upon crime, we are obliged, to some extent, to have recourse to international statistics. But these statistics, as has already been pointed out, owing to the diversity of customs, laws, criminal procedure, and so on, do not easily admit of comparison. So much is this the case that we shall not make the attempt as far as these statistics have reference to crimes against property. In this field no satisfactory result can, at present be obtained. The same remark holds good in relation to all offences against the person, with the exception of homicide. This, undoubtedly, in an important exception; and it arises from the fact that there is a greater consensus of opinion among civilised communities respecting the gravity of homicide than exists with regard to any other form of crime. Murder in all its degrees is a crime which immediately causes a profound commotion; it is easy to recognise; it is more likely than any other offence to come to the ears of the authorities. For these reasons this crime lends itself most readily to international comparison; nevertheless, differences of judicial procedure, legal nomenclature, and different methods of classification stand in the way of making the comparison absolutely accurate. These differences, however, are not so great as to render comparison impossible or worthless; on the contrary, the results of such a comparison are of exceptional value, and go a long way to determine the question of the effect of climate upon crimes of blood.
Assuming, then, with these reservations, that such a comparison can be instituted, let us see to what extent murder, in the widest sense of the word, including wilful murder, manslaughter, and infanticide, prevails in the various countries of Europe. In ordinary circumstances this task would be a laborious one, entailing a minute and careful examination of the criminal statistics and procedure of many nations. Fortunately, it has recently been accomplished by Dr. Bosco in an admirable monograph communicated in the first instance to the Journal of the International Statistical Institute, but now published in a separate form. Bosco's figures have all been taken from official sources, and may, therefore, be accepted as accurate; but, before tabulating-them, it may be useful to make an extract from the explanatory note by which they are accompanied. "As the composition of the population, with respect to age, varies in different countries, and as it has to be remembered that all the population under ten years of age has no share, at least under normal conditions, in the crime of murder, it has seemed to me a more exact method to calculate the proportion of murders to the inhabitants who are over ten years of age, than to include the total population. For those States where a census has been recently taken, such, for instance, as France and Germany, the results of that census have been used; that is to say, the French census of May, 1886, and the German census of December, 1885. For the other States the population has been calculated (adding the excess of births over deaths to the results of the last census) to the end of the intermediate year for each period of years to which the information relates; that is to say, to the end of 1883 for Belgium, and to the end of 1884 for Austria, Hungary, Spain, England, Scotland and Ireland. As the information respecting Italy refers to 1887 only, the population has been estimated up to the end of that year. The division of the population according to age (above and below ten) has been obtained by means of proportional calculations based on the results of the census for each State. In the case of France and Germany, however, it has been taken directly from the census returns."[[16]]
Homicides of all kinds in the following European States:—
| Tried. | Convicted. | |||||
| Countries. | Population over ten. | Years. | Annual average | Per 100,000 inhabitants. | Annual average | Per 100,000 inhabitants. |
| Italy | 23,408,277 | 1887 | 3,606 | 15.40 | 2,805 | 11.98 |
| Austria | 17,199,237 | 1883-6 | 689 | 4.01 | 499 | 2.90 |
| France | 31,044,370 | 1882-6 | 847 | 2.73 | 580 | 1.87 |
| Belgium | 4,377,813 | 1881-5 | 132 | 3.02 | 101 | 2.31 |
| England | 19,898,053 | 1882-6 | 318 | 1.60 | 151 | 0.76 |
| Ireland | 3,854,588 | 1882-6 | 129 | 3.35 | 54 | 1.40 |
| Scotland | 2,841,941 | 1882-6 | 60 | 2.11 | 21 | 0.74 |
| Spain | 13,300,839 | 1883-6 | 1,584 | 11.91 | 1,085 | 8.18 |
| Hungary | 10,821,558 | 1882-6 | 625 | 5.78 | ||
| Holland | 3,172,464 | 1882-6 | 35 | 1.10 | 28 | 0.88 |
| Germany | 35,278,742 | 1882-6 | 567 | 1.61 | 476 | 1.35 |
What is the import of these statistics? We perceive at once that Italy, Spain and Hungary head the list in the proportion of murders to the population. In Italy, out of every 100,000 persons over ten years of age, eleven in round numbers are annually convicted of murder in one or other of its forms; in Spain eight are convicted of the same offence, and in Hungary five are convicted. These three countries are conspicuously ahead of all the others to which our table refers. Austria and Belgium follow at a long distance with two convictions in round numbers to every 100,000 inhabitants over ten. France, Ireland and Germany come next with one conviction and a considerable fraction to every 100,000 persons over ten; England, Scotland and Holland stand at the bottom of the list with between seven and eight persons convicted of murder to every one million of inhabitants over ten.
In order to understand the full meaning of these figures we must take one more stop and compare the numbers convicted with the numbers tried. In some countries very few convictions may take place in proportion to the number accused, while in other countries the proportion may be very considerable. In other words, in order to arrive at an approximate estimate of the amount of murders perpetrated in a country, we must consider how many cases of murder have been tried in the course of the year. It very seldom happens that a person is tried for this offence when no murder has been committed; and it may, therefore, be assumed that the crime has taken place when a man haw to stand his trial for it. Estimating then the prevalence of murder in the various countries by trials, rather than convictions, it will be found that Germany, with a much larger percentage of convictions than England, has just as few cases of murder for trial. And the reason the number of convictions, as between the two nations, differs, arises from the fact that a prisoner's chance of acquittal in England is a hundred per cent. greater than it is in Germany. It is not, therefore, accurate to assume that a greater number of murders are committed in Germany than in England because a greater number of persons are annually convicted of this crime; all that these convictions absolutely prove is, that the machinery of the criminal law is more effective in the one country than in the other. To take another instance, more persons are annually tried for murder in Ireland than in France; but more cases of conviction are recorded in France than in Ireland. These contrasts show that, while the French are less addicted to this grave offence than the Irish, they are more anxious to secure its detection, and that a greater body of public opinion is on the side of law in France than in Ireland. All these instances (and more could easily be added to them) are intended to call attention to the importance of looking at the number of persons tried, as well as the percentage of persons convicted, if we desire to form an accurate estimate of the comparative prevalence of crime.