_Thesaurus Græcæ Linguæ, ab Henrico Stephano constructus, in quo præter alia plurima quæ primus præstitit (paternæ diligentiæ æmulus) vocabula in certas classes distribuit, multiplici derivatorum serie ad primigenia, tanquam ad radices unde pullulant, revocata. Thesaurus Lectori._ _Nunc alii intrepide vestigia nostra sequantur; Me duce, plana via est quæ salebrosa fuit._ _Anno MDLXXII. excudebat Henr. Stephanus, cum privilegio Caes. Majestatis et Christianiss. Galliarum Regis._ 4 vols. Folio, with two supplementary volumes containing an appendix and an index. A seventh volume, issued a year later, adds two glossaries, and a treatise on the dialects of Attica. This _Thesaurus Græcus_ was completed by Henry at about the same age as that at which his father, Robert, had published his Latin _Thesaurus_. The two works would have been for any generation of publishers creditable examples of scholarly and public-spirited enterprise, but when we remember that the publishers were the compilers, and were also the authors of the notes, commentaries, and separate treatises which make up a large portion of the bulk of the volumes, and that their work as editors and authors was done amidst the engrossing cares of the management in stormy times of a complex and absorbing business, the _Thesauri_ remain magnificent monuments to the scholarship, the capacity, and the persistent energy of the two Estiennes. The _Thesaurus Græcus_ was inscribed by Henry to the Emperor Maximilian, Charles IX. of France, Elizabeth of England, and John George, Marquis of Brandenburg. He secured for it, in addition to the privilege of the French King, which bears date 1561, that of the Emperor, issued in 1570. In one of the several prefatory words Henry tells his readers that the only way in which he had found it practicable to complete his task, was to bind himself to produce each twenty-four hours, in readiness for the compositors who had been detailed for the work, a stated quantity of written matter. The interruptions were often, he says, so frequent that he was obliged to lay aside the pen ten times in an hour; but there were few days on which the “copy” that he had pledged himself to complete was not in readiness at the hour fixed.