We are permitted to extract the following from a son of Dr. Sacier, serving in the " far West :" Fokt Laramië, Dacota TjsnniTORY, ) Sunday, Juue 18th, 18G5. Dbab Moruna : - Last Friday's mail brought me your letter of April 25th, I wrote you two mails ago ; was unable to do ao by the last going-out-mail - reasnn thïa : A detachttent ofour company was dotailod to guard the Government Hay Ground, (myself among them) twenty-fivemiles below Larainie. We were ordered thera aliaost oq a moment's notice, and were encamped while there - a period oí sis days, - on the open Prairie without any shelter or oonvenieuces whatcvor. The mail passed us while thoro. On the fifth day of our stay about one hndred nnd fifty lodges of friendly Sioux, (Ogulalies and Brales,) under the escort of Ciipt. Fautz and ono huudred and twenty men of the 7i,h Iowa, encamped with tis. The Iudians had been ordored'to Fort Koarnie, whero it was hoped they would ba beyond the influeice of the Cheyenue and other hostile tribes. It was the largest body of Indians I haVe ever seon eollected, and wheu their lodges were pitehed, their immense berds of ponies turned out to graze, and when they were all assembled to receive theïr rations, consisting of two boef cattlo, about 600 Iba. of bacon , and 900 lbs of hard bread, it was n most ioteresting gight, The baste with whieh they sluughtoreil and dovourod the beevea was most ajnusing. No trace of the slaughter remaiued but the blood ; the feet, head and entrails being regarded as delioacies Indeed, I saw two squawa dragging off tho hido, for the blood and bits of fat and flesh that clung to it. I judged there wcro about twelve bundrod in tho village,- warriors, squawa, and papoosea Doluded - probably 300 warriors. I noticed that while inany appcared friendly enough, the aiajority were unusually sullen and moróse ; not a few secined decidedly bostilt), which lod me to observe to one of tbo fcoys that there would be an outbreak, revolt or massa" ere before tbey reacbed tbeir deatination. You will be sirprised to laarn tbat tbis (t. e. a revolt) oïcurred only at tbe next day's camp, 10 miles frorn ua. The circumgtances are these: In breaking up camp a contenfcion arose aniong tho Indiana. Many were dissatisfied at leaving tbeir country, and protested against going farther ; many wero buroing w;th a desire to avenge their bretbren killed by the wbites, aud openly avowed tbeir intention of returning. The few wbo prefurred peaco to war, aud ïvho would havo gladly followed the wbites, were overruled by the majority; there was one, howev.er, whnm ueither entroaties nor threatg could efifect. This was one of thoir bead chiefs - Standing Elk, the oíd and tried friond oí tho wbites ; be declared bis intention of remainiug a true and s'eadlaat friend of tho whites, and, uioreoTer, be would k'tll tbo first warrior who attempted to rebt4. No attenlion was paid to this tbraat, aud Standing Elk, true toliis word,, firod and killed thu ringleader ; wherenpon be was ki) lod by anotbur Indip.n. Gapt. Fautz becom'.ng awaru oi the diaturbance, but iguoraot of its nature, rasbly went amoug them with ouly two or tbree men. Ho wasalmost immediatcly killed, and also hia ratn. Tho figbt then beCüinc general, between tbe Indians and soldieis, and the Iudians having tbe ad vantage of numbers, and well armod, drovo the soldiers to tho protection of tbeir wagons. Fonr soldiers were killed and seven wounded. llow great was tha loes of the Intfians is not Isnown but three were leit on tlio field. Tho Indians then retiieil aud avram lbo Platte a stioir! fftéWhoe ib;'y, leaving tV.cij lodge-; ;vu.] iu fuot u,virything esopt ponies and a lrove of eut-lc was tband oned, Thcy fearéd pursait f rom Luíaiu i e. News of Uie outbrenk and fight was sent tu Lar umie ar.d Fort Mitehcli, aid a squad if men irrived in the nfteruoÁli with nrdora í'or us to report at Fort Laramin. Col. Moonlight is üow on their tr;: i' with 350 mun. Havo not yet returned. jrT The conspiruoy trial has buen coneluded, and tlie verdict of the comaiission is wai'ting the approval of the President before it will be given to the public. It is understood, however, that all the parties under arrest - if not soine at lurge - were found guilty. S Judgö Tno.Mi'so.N', of the Supreme Court of Penns3'lvania, lias dee:ded that the power to suspend the writ of habeüs corpus was only given to the President d uring the war, and has ordored the release ei Cozzüns, held by military arrest. L:P Gen. Gkant, and some dozen other prominent Generáis, took part in the eelebration of the 4th at Albany. They had a general timo. U3E" President Johnson haa been quite ill, but latest dates say ho is getting ablc to see visitors and attend to business. &HÍE" The corner stone of the Gottysburg raonumett waa laid on the -tth, with imposing ceremonies. Gen. rlowAr.o dehvared the oraiion.