How did Montmorency ‘contribute’ to the packing?

The packing adventure was already a messy job and Montmorency’s contribution made it even more troublesome and tiresome. He did his level best to be a “perfect nuisance”. He came and sat down on the things, just when things were about to be packed. He used to put his leg into the jam and worried the teaspoons. He also pretended that the lemons were rats. So he got into the hamper and killed three of them before Harris could land him with the frying-pan.

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