In the year 1836, while many were waiting—some with a degree of impatience—to hear from Dr. North, his health so far failed him, that he concluded to relinquish, for the present, his inquiries; and, at his particular request, I consented to have the following card inserted in the Boston Medical and Surgical Journal:
"Dr. North, of Hartford, Connecticut, tenders his grateful acknowledgments to the numerous individuals, who were so kind as to forward to him a statement of the effects of vegetable diet on their own persons, in reply to some specific inquiries inserted in the Boston Medical and Surgical Journal of March 11, 1835, and in the Philadelphia Journal of the same year. Although many months elapsed before the answers were all received, yet the writer is fully aware that these communications ought to have been published before this. His apology is a prolonged state of ill health, which has now become so serious as to threaten to drive him to a southern climate for the winter. In this exigency, he has solicited Dr. W. A. Alcott, of Boston, to receive the papers and give them to the public as soon as his numerous engagements will permit. This arrangement will doubtless be fully satisfactory, both to the writers of the communications and to the public.
"Hartford, November 4, 1836."
Various circumstances, beyond my control, united to defer the publication of the contemplated work to the year 1838. It is hoped, however, that nothing was lost by delay. It gave further opportunity for reflection, as well as for observation and experiment; and if the work is of any value at all to the community, it owes much of that value to the fact that what the public may be disposed to regard as unnecessary, afforded another year for investigation. Not that any new discoveries were made in that time, but I was, at least, enabled to verify and confirm my former conclusions, and to review, more carefully than ever, the whole argument. It is hoped that the work will at least serve as a pioneer to a more extensive as well as more scientific volume, by some individual who is better able to do the subject justice.
It will be my object to present the facts and arguments of the following volume, not in a distorted or one-sided manner, but according to truth. I have no private interests to subserve, which would lead me to suppress, or falsely color, or exaggerate. If vegetable food is not preferable to animal, I certainly do not wish to have it so regarded. This profession of a sincere desire to know and teach the truth may be an apology for placing the letters in the order in which they appear—which certainly is such as to give no unfair advantages to those who believe in the superiority of the vegetable system—and for the faithfulness with which their whole contents, whether favoring one side or other of the argument, have been transcribed.
The title of the work requires a word of explanation. It is not intended, or even intimated, that there are no facts here but what rest on medical authority; but rather, that the work originated with the medical profession, and contains, for the most part, testimony which is exclusively medical—either given by medical men, or under their sanction. In fact, though designed chiefly for popular reading, it is in a good degree a medical work; and will probably stand or fall, according to the sentence of approbation or disapprobation which shall be pronounced by the medical profession.
The following chapter will contain the letters addressed to Dr. North. They are inserted, with a single exception, in the precise order of their date. The first, however, does not appear to have been elicited by Dr. North's circular; but rather by a request in some previous letter. It will be observed that several of the letters include more than one case or experiment; and a few of them many. Thus the whole series embraces, at the least calculation, from thirty to forty experiments.
The replies of nearly every individual are numbered to correspond with the questions, as suggested by Dr. North; so that, if there should remain a doubt, in any case, in regard to the precise point referred to by the writer of the letter, the reader has only to turn to the circular in the present chapter, and read the question there, which corresponds to the number of the doubtful one. Thus, for example, the various replies marked 6, refer to the length or duration of the experiment or experiments which had been made; and those marked 9, to the aperient effects of a diet exclusively vegetable. And so of all the rest.