Question of return of Dyke and Spence  taken up with Defence authorities. Dyke has important work here as Director of Artillery, and it is at present proposed that he should proceed to the United Kingdom in January for a conference connected with that work. We can give no convincing reason why his programme should be changed as it seems to us that reports of military observers are complete and Committee deliberations cannot be assisted [by] further investigations. Time has arrived when decision and action and not investigation is required, and in so far as military advice is required Campbell and Chesterman should suffice. If you can give us convincing case we would endeavour to obtain Defence concurrence.