La PLata.-Extract of letter from Montevideo, dated July II, 1880.

 t l refer you to the papers l send, for intelligence with regard to affairs here. You will observe that the politi- cal difficulties which existed when last wrote Yon,.have been amicably adjust ed. It surely does little honor to the country, that its legal government have treated with individual, who, to re- venge his own private injuries, had plunged 1t into civil war. Yet, under all circumstances, 1t vas the most pru- deatcorrse that could have been pur- sued, and has saved much bIoodshed, and the ruin of the inhabitants; the ia- evitable efeotof civil eommotian, where property lies principally in cattle and horses and can easily be carried of. Enc Constitution formed by the I.egis- iature, having received the appreciation of Buenos Ayres and Brazil, as requir- ed by the treaty of peace between those countries. is to be sworn to on the 18th,