One advantage of such a register as this would be the assistance it would render in all attempts to trace animals which are stolen or lost, and which find their way to the laboratory. Every animal which may possibly have been a pet should be kept for redemption for two to three weeks, and no animal should be purchased unless the purchaser is able to have a record of the address of the seller. Anyone can distinguish between a homeless vagabond of the street and an animal which must have been well treated in a good home, and I believe that experimentation upon a pet animal under any conditions should be forbidden by law. The gain arising from such registration is obvious. It would mark the entrance within the laboratory of every creature intended for experimentation of any kind. It makes possible to an extent the tracing of pet animals, lost or stolen, which now find themselves devoted to vivisection. The inspection of such a register should be permitted to any person whatever endeavouring to trace a lost or stolen pet. A summary should be regularly furnished for publication, attested by oath, precisely as the cashier of a national bank periodically attests the accuracy of his reports. Such a report is but a promulgation of facts which ought to be within the reach of the public. By no stretch of the imagination can one honestly declare that such knowledge will constitute an impediment to justifiable research. Yet no one acquainted with this subject can doubt that every resource of the laboratory will be brought forward to resist to the uttermost even the giving of so little information as this. But we must go beyond this. To trace animals to the door of the laboratory, and there to drop them, leaves the curtain unlifted; they enter the darkness, and that darkness must be dispelled. It must be the privilege of the public to know as completely as possible EXACTLY WHAT IS DONE AFTER THEY PASS THE DOOR. How is this to be accomplished? How may we know what is done to the animals thus traced to the door of every laboratory without being charged with impeding the legitimate researches of science? For reasons stated, inspection will not accomplish it. As carried out in England, it certainly has accomplished but little for the protection of animals. The published reports of experiments made in that country under one or another "certificate," are practically of no value whatever except to show the constant increase of such experiments every year. The plummet must sink to deeper depths. If Society is to grant to the physiological laboratory that isolation and freedom from interference which it craves, THEN SOCIETY HAS THE RIGHT TO ASK IN RETURN THE COMPLETEST DISCLOSURE THAT CAN BE GIVEN OF METHODS AND RESULTS. It has the right. Unfortunately it cannot persuade or compel. That is the province of Legislation.