The negroes nave ti saying, which we are npprehensive will be parÃºaUy ceYejrsr ed helore long - "Whiie man mighty onsartitp. - for slave property is getting to be a g'iod deui "onaartin" n sotne sectiona. Tlie strikiiigdifforence in this respect laay be well illustrtited by ho scale ol rewards in different sections. We have before us at ÃÃºa moment three reeent daiiy papers from New Orleans, in which are Ãi nurnber ot' advertisemenis of runawii} slave?, whcre the rewards ofÃered are 10, $ 10, $ 10, $20, $25 and $50,fr the return of ihefugilives,or their CÃ¼tifinenient in any prison. Compare this now with the advertisements in (he ofiv cial paper ut'ihe Federal Government, at Washington, where rewards are culoinarily offered of $50, $100, $200, and sornetimcs $500. Ãn this connection our thoughts turn to the vcry painful expericnce of Mr. Thomas C. Gantt, of Prince Frederick Co., Muryland. In our paper of June 3, we named his hard tot,althougli by a snistake of the printer, his name ie given as Thomas E. Gaui. He had lost lii-s man, Robert, "calhng himself RbeitButler," and was so rnuch ffected by the Ãoss, tlrnt he oflcred in tlie National Inte!ligoncer, oÃ' May 20, a reward oftwo liundred dollars lor his reiurn. In our sympathy wi'.h Mr. Gantt, we&ped Ã³ i tlie hue and ury as well as vq could - uhliough we proiesÃ¯, without the sjightest tliouglit of (:v?r L'-'w.'i'' 'lic two hundred dollars much as we ueed money jast no'.v. Bat all our cfiorts, t seetn?, h:ive provecÃ unavailing, and iostead ofobtainini; reliof,Mr. Gantt finds himself saHdled with now mis fotlunes, and in hid desperation, seetns Jriven to the most extreme cxpedients to put a slop to tlus drain upon his pcdi-motive proper ly. Read, ye hard-hearteÃ³, tliis aiÃ¯Ã¼cling,-- this soul-slirring apjeal.