INTRODUCTION TO PARTS I, II, AND III, 



The object of the present lists is to record the principal entomolog- 

 ical writings of B. D. Walsh and C. V. Eiley. Few will be likely to 

 criticize the association of the names of Walsh and Eiley in a list of this 

 kind, so largely devoted to economic entomology, or to question the 

 desirability of collating their writings in advance of others. 



As recognized authorities upon entomology, especially from an 

 economic standpoint, their writings have been extensively quoted 

 sometimes with, but frequently without, credit in the agricultural and 

 horticultural journals of the day. These secondary references, though 

 of a certain value when the original is inaccessible, have, as a rule, 

 been omitted. In citing such as are given I have used my personal 

 judgment. To have given all would h^ive increased the size of the list 

 considerably with but a slight increase in its usefulness. 



Occasionally, a publisher to meet some popular demand puts the 

 writings of an author into book form without the knowledge of the 

 latter. Such an occurrence has happened more than once with Dr. 

 Eiley's writings. To mention but one : In 1877 Messrs. Gteorge Eut- 

 ledge & Sons, of London, published " The Colorado beetle, with sug- 

 gestions for its repression and methods of destruction," with Dr. Eiley's 

 name upon the title-page as author. This is a partial reprint of Potato 

 Pests entirely unsanctioned and published without knowledge of the au- 

 thor. (See London Times, October 17, 1887.) These publishers' re- 

 prints are omitted from this list. The " S.-b." after the reference of many 

 of the articles from the agricultural and other journals refers to the 

 series of scrap-books-used in divisional work. 



A biographical sketch of Dr. Walsh is given in the second volume of 

 the American Entomologist, Vol. II, No. 3, pp. 65-68, January, 1870. 



The chief facts in Dr. Eiley's life may be found in the " Common- 

 wealth of Missouri " (1875) and the National Farmer, September 20, 1883. 



In the preparation of the list I have freely used all data accumulated 

 by the Division, notably the work of Mr. B. P. Mann and a private 

 list of Dr. Eiley's. 



Many persons, both within and without the Department, have kindly 

 answered my inquiries. S. H. 



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