...th an eave to catch the drip. It is held by a strap or hanger, which may have means for the vertical adjustment of the trough, so as to give it the required fall in the length of the eave. Mr. Goodyear 's name for what is generally known as hard rubber. It is a vulcanite with a larger proportion of sulphur and certain added ingredients. The proportion of sulphur is from thirty to sixty per cen...