Xiv 
gist’s Department, distinct from University funds, and attention 
has been elsewhere called to the fact that the Station work and 
State Entomologist’s work are so closely allied that a report upon 
the one must necessarily to a certain extent include a report upon 
the other. 
The excellent contribution from Professor A. D. Whedon of 
Mankato State Normal, however, upon Odonata or Dragon Flies 
of Minnesota, is upon a different basis. It has been the plan of this 
Department, a plan inaugurated by the late Professor Lugger, to 
present to the citizens of Minnesota a popular treatise upon each of 
the leading orders of insects found in the State, emphasizing the 
economic forms. Note in this connection the comprehensive reports 
of Professor Lugger upon “The Beetles of Minnesota,” “Butterflies 
of Minnesota,” “The Hemiptera of Minnesota,” Grasshoppers and 
Crickets,” and later the very brief report by the writer upon the 
“Diptera or Two-winged Flies of Minnesota.” Some groups, while 
of interest to the amateur, do not, on account of their comparatively 
small size, call for such extended reports as the above. Hence we 
feel very fortunate to obtain, in line with the above plan, this con- 
tribution upon the Dragon Flies of Minnesota, for this report. We 
also include here Professor M. P. Somes’ excellent report upon “The 
Acridiidae of Minnesota,” published as Bulletin No. 141 (Tech- 
nical) of the Minnesota Experiment Station, July, 1914. This work 
was done entirely under the direction of the State Entomologist 
and with the funds in his state department. Because of this, 
and since we believe it one of the best publications in that particular 
field, representing in part the careful work of three years in Minne- 
sota, and feel that it will be useful to specialists in this group 
and to the schools 1n this state and elsewhere, we include it in the 
1913-1914 report. The three colored plates were first used in the 
Fifteenth Report, 1912-1913, but since their presence is necessary 
for the more perfect understanding of Mr. Somes’ paper, in which 
occur many references to the plates, we hope we may be pardoned 
for repeating them here. These plates represent excellent work, 
both by artist and lithographer, as do also the three colored plates 
of heads of birds, finished by the quadri-colored process. The col- 
ored plate illustrating San Jose Scale and Crown Gall is made by 
the same process. The paging in Mr. Somes’ article, since it was 
first printed as a technical bulletin from the Experiment Station, 
does not conform to the paging in the body of this Report. 
