Considering that the army was operating in a devastated hostile country, a thousand miles away from its bases at Halifax and Louisbourg, and that the interaction of the different servicesnaval and military, Imperial and Colonialrequired adjustment to a nicety at every turn, it was wonderful that so much was done so well with means which were far from being adequate.

The phenomena of the seasons, of the trade winds, of the Gulf-stream, are as much the results of the reaction between these inner activities and outward forces, as are the budding of the leaves in spring and their falling in autumn the effects of the interaction between the organisation of a plant and the solar light and heat.

The few which contain no chlorophyll and are colourless, are unable to extract the carbon which they require from atmospheric carbonic acid, and lead a parasitic existence upon other plants; but it by no means follows, often as the statement has been repeated, that the manufacturing power of plants depends on their chlorophyll, and its interaction with the rays of the sun.

Price quantity interactions in business cycles.

Few modern socialists present their faith as a complete panacea, and most are now setting to work in earnest upon these long-shirked preliminary problems of human interaction through which the vital problem of a collective head and brain can alone be approached.