Agricultural, horticultural and forestry machinery; agricultural implements; trailer mounted machines and implements for agricultural use; vacuum slurry tankers; mobile slurry holding tanks; water bowsers for slow and high speed applications; fuel bowsers for agricultural use; spraying machines; slurry and lime spreaders, manure spreaders, and components and attachment parts for these goods; apparatus and instruments for raising and lowering trailers; hydraulic apparatus, trailer hitches, motors, and transmissions for controlling and operating all the aforesaid goods