keenly appreciative of the power exercised by the myth-making faculty 
in the past, but as applied to early physicians, we suggest that the 
suspicion may easily be too active. When Pare, for example, pictures a 
monster, we may distrust his art, his artist, or his engraver, and make 
all due allowance for his primitive knowledge of teratology, coupled 
with the exaggerations and inventions of the wonder-lover; but when he 
describes in his own writing what he or his confreres have seen on the 
battle-field or in the dissecting room, we think, within moderate limits, 
we owe him credence. For the rest, we doubt not that the modern 
reporter is, to be mild, quite as much of a myth-maker as his elder 
brother, especially if we find modern instances that are essentially like 
the older cases reported in reputable journals or books, and by men 
presumably honest. In our collection we have endeavored, so far as 
possible, to cite similar cases from the older and from the more recent 
literature. 
This connection suggests the question of credibility in general. It need 
hardly be said that the lay-journalist and newspaper reporter have 
usually been ignored by us, simply because experience and 
investigation have many times proved that a scientific fact, by
presentation in most lay-journals, becomes in some mysterious manner, 
ipso facto, a scientific caricature (or worse !), and if it is so with facts, 
what must be the effect upon reports based upon no fact whatsoever? It 
is manifestly impossible for us to guarantee the credibility of chronicles 
given. If we have been reasonably certain of unreliability, we may not 
even have mentioned the marvelous statement. Obviously, we could do 
no more with apparently credible cases, reported by reputable medical 
men, than to cite author and source and leave the matter there, where 
our responsibility must end. 
But where our proper responsibility seemed likely never to end was in 
carrying out the enormous labor requisite for a reasonable certainty that 
we had omitted no searching that might lead to undiscovered facts, 
ancient or modern. Choice in selection is always, of course, an affair de 
gustibus, and especially when, like the present, there is considerable 
embarrassment of riches, coupled with the purpose of compressing our 
results in one handy volume. In brief, it may be said that several years 
of exhaustive research have been spent by us in the great medical 
libraries of the United States and Europe in collecting the material 
herewith presented. If, despite of this, omissions and errors are to be 
found, we shall be grateful to have them pointed out. It must be 
remembered that limits of space have forbidden satisfactory discussion 
of the cases, and the prime object of the whole work has been to 
carefully collect and group the anomalies and curiosities, and allow the 
reader to form his own conclusions and make his own deductions. 
As the entire labor in the preparation of the forelying volume, from the 
inception of the idea to the completion of the index, has been 
exclusively the personal work of the authors, it is with full confidence 
of the authenticity of the reports quoted that the material is presented. 
Complete references are given to those facts that are comparatively 
unknown or unique, or that are worthy of particular interest or further 
investigation. To prevent unnecessary loading of the book with 
foot-notes, in those instances in which there are a number of cases of 
the same nature, and a description has not been thought necessary, mere 
citation being sufficient, references are but briefly given or omitted 
altogether. For the same reason a bibliographic index has been added at 
the end of the text. This contains the most important sources of 
information used, and each journal or book therein has its own number,
which is used in its stead all through the book (thus, 476 signifies The 
Lancet, London; 597, the New York Medical Journal; etc.). These 
bibliographic numbers begin at 100. 
Notwithstanding that every effort has been made to conveniently and 
satisfactorily group the thousands of cases contained in the book (a 
labor of no small proportions in itself), a complete general index is a 
practical necessity for the full success of what is essentially a 
reference-volume, and consequently one has been added, in which may 
be found not only the subjects under consideration and numerous 
cross-references, but also the names of the authors of the most 
important reports. A table of contents follows this preface. 
We assume the responsibility for innovations in orthography, certain 
abbreviations, and the occasional substitution of figures for large 
numerals, fractions, and decimals, made necessary by limited space, 
and in some cases to more lucidly show tables and statistics. From the 
variety of the reports, uniformity of nomenclature and numeration is 
almost impossible. 
As we contemplate constantly increasing    
    
		
	
	
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