Why did he take the trunk to Whitechapel?

[David Orsam]

There's a slight problem with timing here though Pierre.

John Arnold's statement says that he was told about a murder "On Saturday night". This was Saturday 7 September 1889. Which means that this murder could not have been committed on Sunday 8 September 1889, the anniversary of the Chapman murder.

[Pierre]

11 September 1889 James Monro asked this question in a communication to Mr Sandars
(Evans & Skinner, p. 546):

Why did he take the trunk to Whitechapel...?

On September 10, 1889, at 5:15 AM, a female torso was discovered by P.C. William Pennett under a railway arch in Pinchin Street, covered by an old chemise. The body, missing both head and legs, was already heavily decomposed, as the stench was the first thing the constable noticed.

http://www.casebook.org/victims/pinchin.html

James Monro, in the same communication, also asked:

"...what does the finding of the body there show?"

and stated that the victim was murdered on the 8th September.

That was exactly a year after the murder on Annie Chapman.

And on this day, 8 September 1889, a man called John Arnold met at man in a uniform who told him

"...Another horrible murder...in Backchurch Lane."

Backchurch Lane is a street in Whitechapel from which runs Pinchin Street.

Two days later they found the trunk in Pinchin Street.

So

Why did he take the trunk to Whitechapel?

if he did, and

What does the finding of the trunk there show?

Regards, Pierre