A reference to the isothermal lines in any physical atlas will be of considerable value in assisting us to the elucidation of the subject under consideration. These are certain lines drawn over a chart of the earth's surface, on which are located those cities and regions where the mean annual temperature is the same. Thus the mean annual temperature of Sydney is 62.9 degrees; the corresponding line in the northern world runs through Naples and Lisbon in Europe, and a little below the central portion of the United States and California in America. At Melbourne the average yearly temperature is 57.6 degrees, corresponding in the old world to a temperature met with at Marseilles, Bordeaux, the south of France and Northern Italy, while across the Atlantic a somewhat similar climate obtains about the middle of the United States. The mean annual temperature at Brisbane is 67.74 degrees; this is the same as that of Algiers and the southern shores of the Mediterranean generally, and coincides with that met with in New Orleans and the southern states of North America. At Adelaide the average yearly temperature is 63.1 degrees, and the climate is considered to greatly resemble that of Sicily. Now, no other mode that I am aware of, such as this juxtaposition of localities where the mean annual temperature is the same, will afford such a convenient way of contrasting the mode of living which is practised in Australia with that which is followed by the inhabitants of the regions referred to in Europe. The cardinal difference, and one which stands out in bold relief, is that the Australian food habits are characterised by a preponderancy of meat diet and a corresponding neglect of vegetable products. On the other hand, the dietary of Southern Europe is in rational harmony with its climate, and there is not that insensate insistence of a highly nitrogenous animal fare to the exclusion of all else. The striking features, then, in connection with the Australian dietary are this extraordinary consumption of meat and the faith which is presumably attached to its food value. It is no exaggeration to say that the vast majority of our people believe implicitly in the necessity for meat at their three daily mealy, and not only is this the case in the cooler parts of the year, but it is practised universally during the height of the summer, without being modified in the slightest degree. Thus the student of ethnography is presented with the somewhat curious anomaly of a people living in a summer temperature of 70 degrees or 80 degrees in the shade, eating more meat than do the bulk of the inhabitants of Great Britain and Ireland (with their ice and snow) during their winter months. It is one of the characteristics of the Anglo-Saxon race, however, this inability to appreciate the necessity of conforming to new climatic conditions in which their lot may be cast. It will be the same, too, when the British restaurant-keeper begins business in Equatorial Africa.