indeterminate amounts for subsistence allowances, travelling time, travelling rates and designated craftsmen, which largely depend on the action that the Ministry of Labour may find it necessary to take in directing labour. 6. Suitable selected local builders should in many cases be at the cost indicated, and they should able to carry out the work be so invited in the first instance. But it is certain that in there will be found to occur the prevailing difficult conditions the country; and very wide variations in tenders received over circumstances, in order to it may be found necessary in such to concentrate the work, in whole secure efficiency and economy, or in part, in the hands of firms experienced in war-time emergency building.