ANSWERS TO INQUIRERS J. and B., Louisville.—Do not consider it practicable under such conditions. FRANK MAXWELL.—Such a matter should be governed by your Department rules. GBORGK E. LUCAS, Wisconsin.—Consult our advertising columns this week, and you will obtain the desired information. PET COCK. Bradford.—Asbestos is used with satisfactory results for steam packing for such joints as you speak of Rubber is too quickly destroyed. SHAWMUT AVENUE, Boston.—A polite statement of facts generally has a good effect. We believe your Department has been benefited in the way you speak of.