It is hoped that this original purpose of the _Directory_ has been fairly fulfilled, and that Anti-vivisectionists will universally find it to be a very serviceable book of reference. It is not pretended that it is a perfect work, that the names of all the Vivisectors in Europe have been ascertained, or their worst deeds always ferreted out. Great pains have been taken to make the list thus complete, and several able agents have been employed for the purpose abroad as well as at home, under the editor’s supervision. But years would have been needed for the exhaustive completion of the task, and the publication would have been indefinitely delayed. As it now appears, the _Directory_ presents (it is confidently believed) a mass of reliable information in a convenient form, and at a moment when it is urgently needed for use in our sorrowful controversy. But even while this first purpose of the _Directory_ was being patiently carried out, it became obvious to those concerned that the work would fulfil at the same time another and still more important end. As name after name appeared for registration, and cruel experiment followed cruel experiment in endless variety, the utility of the _Directory_ as affording evidence of the extent to which Vivisection is now carried on in Europe, became revealed. No doubt or dispute, it was obvious, could possibly attach to _this_ testimony. There can be no question here of that “exaggeration” or those “sensational appeals” wherewith our opponents are wont to charge us. There can be no “sensational appeal” in a Dictionary; nay, care has been taken that there should not be one single epithet editorially applied to any experiment recorded from first to last. The _Directory_ is a mere dry Register, like an ordinary Medical or Clerical Directory of names, dates, places, degrees, books, pamphlets, licenses, and certificates. Only some _verbatim_ quotations are added, with exact references to chapter and verse. If these should happen to convey most damning accusations, it is the Vivisectors themselves who have registered their own offences.