[FOR THE PILOT ] Ter -Centenary Celebration. The German Reformed Church in America, and also to some extent in Europe, observe the present year as a year of jubilee, in honor of the formation and adoption of the Ilaidelberg Catechism. Those who have some acquaint ance with the history of the great Protestant Reformation of the 16th century know that this Catechism is one of the principle symbols of the Reformed church of that period, that it has continued to be the only symbol .of the German Reformed Church, and that, owing to its mild and oecumenical spirit, it found wide-spread favor among the different nations of Protestant . Eietope. it was prell'afed,'under the direction of Frederick Hi, called also Frederick the Pious, Elector of the Palatinate on the Rhine in the year 1563, by Zacharias Ursinus and Caspar Olevianus, professors in the University of Heidelberg. The system or, faith which it teaches is Re formed or Calvanistie, in antithesis to the Lutheran system of faith. It is Calvanistic oo the subject of the Eucharist, which was the principal subject of controversy that divided original Protestanism into two grand divisions, the Reformed and the Lutheran. On the subjeett tbekdiOineAmtrees it is KR .053'.• t t han more moderate in its tone than some other Re formed Symbolm its for instance the;.old.Stotic Confession, adopted two years earlier, and the Westminster COnfession, adopted about eighty years later. The celebration referred to was Inaugurated by a convention held in F'hiladelp . Ma, op the tea werejantiarY,'ia"Which "over` SO U `deYeinte were present, and where dilring sii days, eigay, biographical and historicaLfrom eminent thee, logians in Europe, and also from ministers of the Reformed church in this country were read. These essays and 'memoirs are now be ing published, and' will Constitute a volume of upwards of 600-Pages, which will soon .be ready fur distribution, At the same time a coutmittee have prepared, and are now publish ing, a Tri•glott edition of the Catechism in German, Latin, and English—the origiOal having been in both German and Latin. The churchis.turning the occasion to prac . tical aCcount raising fu'odi fur the more corn plete endowment of its theological and literary institutions, and for its' various benevolent operations. The whole movement is designed, not to fps, ter any narrow denominational prejudice, but to awaken a 'deeper historical interest the classic' periad of Protestantism, to s trenk?f; en the bonds of union with other brattches.of< the; Protestant-churehand Co serve as a eion patens, of thanksgivin'o. In this light it has thusfar - - been favoiably noticed by the leading Protest ant deriotninaliiinitof thiseOuntrY antrEtircipe - . The historian : l ; society of the Presbyter i iap Church in this country kindly sent a delegate to the convention_ in Philadelphia, very a*ppropriate letter, conveyed the chiistian greeting tif, WesiOnisteri pa r littpylf(ig. The G4ihititi 4 lreliwnted ell'uYeli a This place held its., congregational Icelebratica ~Qll,