The #optional functions# of government consist of those kinds of work which a government can execute with advantage, such as providing a good currency, establishing a uniform system of weights and measures, constructing and maintaining the roads, carrying letters through a national post office, keeping up a national observatory and a meteorological office, &c. The optional functions are in fact very numerous, and there is hardly any end to the things which one government or another has provided for the people. It would be a most important work, if it were possible, to decide exactly what undertakings a government should take upon itself, and what it should leave to the free action of other people; but it is impossible to lay down any precise rules upon this subject. The characters and habits and circumstances of nations differ so much, that what is good in one case might be bad in another. Thus in Russia the government makes all the railways, and the same is the case in the Australian States; but it does not at all follow that, because this is necessary or desirable in those countries, therefore it is desirable in England, or Ireland, or the United States. Experience shows that though the English Post Office is very profitable, the Postal Telegraphs cannot at present be made to pay. There can be no doubt that #it would be altogether ruinous to put the enormous system of English railways under the management of government officers#. Each case has thus to be judged upon its own merits, and all that the political economist can do is to point out the general advantages and disadvantages of government management. #93. The Advantage of Government Management.# There is often immense economy in having a single establishment to do a certain kind of work for the whole country. For instance, a weather office in London can get daily telegraphic reports of the weather in all parts of the kingdom and many parts of Europe; combining and comparing these reports it can form a much better opinion about the coming weather than would be possible to private persons, and this opinion can be rapidly made known by the telegraph and newspapers. The few thousand pounds spent by the government yearly on the meteorological office are inconsiderable compared with the services which it may render to the public by preventing shipwrecks, colliery explosions, and other great disasters and inconveniences which often arise from our ignorance of the coming weather. It is certainly proper then to make meteorological observation one of the functions of government.