In France the sewer authorities hold an annual hunting-match, on which occasion there is a grand capture of rats; these animals are not destined to afford sport to the "fancy" under the tender manipulations of a dog "Billy;" on the contrary, our neighbours have too much respect for the integrity of his hide. We are informed that they have established a company in Paris, upon the Hudson's Bay principle, to buy up all the rats of the country for the sake of their skin. The soft nap of the fur when dressed is of the most beautiful texture, far exceeding in delicacy that of the beaver, and the hatters consequently use it as a substitute. The hide is employed to make the thumbs of the best gloves, its elasticity and texture rendering it preferable to kid. Parent Duchâtelet collected several particulars of the rats which in his day frequented the knackers' yards at Montfaucon. Attracted by the abundance of animal food, they increased so enormously that the surrounding inhabitants, hearing that the government intended to remove these establishments, were seized with apprehension lest the vermin, when deprived of their larder, should spread through the neighbourhood, and, like a flight of locusts, swallow up everything. The alarmists may even have feared lest they should meet with a similar fate to that of the Archbishop of Mayence, who, if old chronicles are to be believed, retired to a tower in one of the isles of the Rhine to escape being devoured by a host of these creatures whose appetites were set upon him, and who, pertinaciously pursuing him to his retreat, succeeded in eating him up at last. The report of the Commission instituted to inquire into the circumstances of the Montfaucon case, showed that the apprehensions of serious damage were by no means unfounded.