Lawyers for the Beaverbrook Art Gallery debated the meaning of "permanent collection" with Lord Beaverbrook's grandson Tuesday, during a hearing into who owns art worth $100 million.

Sir Maxwell Aitken, who administers the foundation that doles out his grandfather's fortune and is claiming ownership of the art currently housed at the Fredericton gallery, wrapped up two days of testimony on Tuesday.

Gallery lawyer Larry Lowenstein pointed to several documents in which the 133 paintings in dispute were mentioned as part of the "permanent collection" of the gallery.

He suggested that supported the argument that the paintings had not been lent to the gallery, but were outright gifts from Lord Beaverbrook.

Aitken said the words aren't proof of anything. "It's an expression," he said.

Later, lawyers for his foundation produced minutes from a 2002 board meeting that provided a definition of "permanent collection" for insurance purposes.

They had Aitken read the definition, which included semi-permanent holdings owned by, or on extended loan to, the gallery.

Both sides retract insults

Tuesday's testimony also included some oddities, including a mea culpa from each side.

The gallery's lawyers disassociated themselves from former gallery curator Stuart Smith, who in 2004 called Lord Beaverbrook a "loathsome little man."

Maxwell Aitken said it was regrettable that his cousin Tim Aitken once referred to the gallery's board as a "bunch of hacks."

Gallery director Bernard Riordon is expected to testify on behalf of the gallery on Wednesday.