this collection of mostly small boats worked well at first when the union navy could not effectively guard all areas of the coast. land snails eat vegetables and fruits, such as lettuce, carrots, cucumber and apples. they can also be all black. there is also a term called a skirt role. sizes are, in some cases, based on the imperial measurement and referred to as such; in other cases the sizes are too far removed from the imperial size to be referred to by imperial measurement. city on the edge of forever 