Hovr to Kill a Cat. A number of people are interested in learning- the best way of painlessly killing- animals, and we may usefully note a communication, on the subject from a correspondent of :he English Mechanic, lie writes: ''The most merciful way of destroying cats is to chloroform them. Draw a sock (knitted one preferred, as being- clastic) over pussy's head so that.1 the toe of the soek is brought to her nose or nearly so; then pour about half ateaspoonful of chloroform on tire so'ck close to her nose. Almost as scon as she has become frighteur-d by the unusual smell of chloroform she quietly goes off to sleep; a little more chloroform chloro-form is added, perhaps twice, and pussy never wakes again." "Did I ever see the gentleman apain? Yes, quite often. lie is oue of the leading lead-ing men of St. Louis to-day.''