This turn to my affairs surprised, and at first stunned me.  The single circumstance about which I had entertained the least apprehension, was the neglect in my passport of providing for any other vessel than the Investigator; but from this order of the captain-general, I found myself considered in the light of a spy; my desire to know how far Mauritius could be useful as a place of refitment in the future part of my voyage—­a desire formed and expressed in the belief of its being a time of peace, was made a plea for depriving me of liberty and the result of more than two years of risk and labour.  The sensations raised by this violation of justice, of humanity, and of the faith of his own government, need not be described; they will be readily felt by every Englishman who has been subjected, were it only for a day, to French revolutionary power.  On returning to my place of confinement, I immediately wrote and sent the following letter, addressed to His Excellency the captain-general De Caen, governor in chief, etc. etc. etc.  Isle of France.

Sir,

From your order, which was explained to me this morning, I find that the plea for detaining me is not now that I do not appear with the Investigator, according to the letter of my passport from the first consul of France; but that I have violated the neutrality therein required by having given in my journal, as an additional reason for putting into this port, that “it would enable me to acquire a knowledge of the periodical winds, and of the present state of the French colony; how far it or its dependencies in Madagascar might be useful to Port Jackson, and how far it would be a convenient place for me to touch at in my future expected voyage:”  I quote from memory only, my journal being in your possession.  How this remark, made upon the supposition of our two nations being at peace, can be a breach of neutrality, I acknowledge myself unable to discover.  Nothing can, in my opinion, add to the propriety of the intentions with which I put into this port, but I shall justify it by the example of your own nation; and to do so, it is only necessary for me to refer to the instructions which preface the published voyage of the unfortunate La Perouse, by the judicious Fleurieu.  Your Excellency will there see, that the much lamented navigator was ordered to make particular observations upon the trade, manufactures, strength, situation, etc. of every port where he might touch; so that, if the example of your own nation be taken as a standard of propriety, the plea for making me a prisoner is altogether untenable.  Upon the supposition even of its being war, and that I knew it and still intended to make the observations expressed in my journal; upon this incorrect and worst supposition I have, I think, an example of similar conduct in your own nation; unless you can assure me that the captains Baudin and Hamelin made no such remarks upon Port Jackson, for it was a declared war