The same reasons that slowed our communications also delayed the publication of our work, which has to be accompanied by a number of engravings and maps. If such difficulties are met when governments are paying, how much worse they are when paid by private individuals. It would have been impossible to overcome these difficulties if the enthusiasm of the editors had not been matched by public reaction. More than two thirds of our work has now been published. The maps of the Orinoco, the Casiquiare and the Magdalena rivers, based on my astronomical observations, together with several hundred plants, have been engraved and are ready to appear. I shall not leave Europe on my Asian journey before I have finished publishing my travels to the New World.