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LETTER OF TRANSMITTAL. 
U. S. Department of Agriculture, 
Division of Entomology, 
Washington, D. C, April °29, 1902. 
Sir: I have the honor to transmit for publication a manuscript pre- 
pared by Mr. Nathan Banks, of this office, in which are considered the 
principal insects liable to be distributed upon nursery stock. The 
inspection of nursery stock under State laws has become so general 
throughout the United States that the desirability of some publication 
of this sort has become very evident. I had the matter in mind last 
autumn, and at a conference of the official horticultural inspectors for 
the United States, held at Washington October 11-13, 1901, a resolu- 
tion was unanimously passed requesting this Department to prepare 
and publish an article on those nursery pests of the country which 
are capable of transmission on nursery stock to the injury of the pur- 
chasers. Since it is desirable that this manuscript shall be put in 
available shape for distribution to all horticultural inspectors and to 
all nurserymen and others immediately interested, I recommend that 
it be issued as Bulletin No. 34, new series, of this Division. 
Respectfully, 
L. O. Howard, 
Entomologist. 
Hon. James Wilson, 
Secretary of Agriculture. 
