The quantity of spices grown was carefully regulated, suitable spots being selected, and the trees elsewhere destroyed.

Thus cloves were specially cultivated at Amboina; nutmegs in the Banda islands.

Into this strictly guarded monopoly, from which the English had been expelled by the energy of Koen, they were now by the new treaty to be admitted to a share.
It was only with difficulty that the Dutch were induced to acquiesce sullenly in the presence of the intruders.

A fatal collision took place almost immediately after the convention between the Companies, about the trade in the spice islands, had been renewed in London, 1622-3.
In 1623 Koen was succeeded, as governor-general, by Pieter Carpentier, whose name is still perpetuated by the Gulf of Carpentaria on the north of Australia.

At this time of transition the Governor of Amboina, Van Speult, professed to have discovered a conspiracy of the English settlers, headed by Gabriel Towerson, to make themselves masters of the Dutch fort.