Answer:
You’ll have me at night and if you remove the first letter I denote the top, such as on a train
Whilst I was engaged in sitting. I spied the dead carrying the living
What can burn the eyes, sting the mouth, yet be consumed?
An open ended barrel, it is shaped like a hive. It is filled with the flesh, and the flesh is alive!
To cross the water I'm the way, for water I'm above. I touch it not and, truth to say, I neither swim nor move.