ACTING STATE ENTOMOLOGIST. 
95 
invading army of that year. But, in the first place, as I have already shown, there was 
an interval of, at the very least, 42 days, during which no ravages by Grasshoppers are 
recorded anywhere in the afflicted region — which pretty effectually demolishes the 
above supposition ; secondly, one of the reports printed below expressly says that, for a 
period of 2% days, there was a constant influx of Grasshoppers into Richland, Nebraska, 
from the north-west ; and thirdly, although south-western Iowa was really invaded 
1867 by some of the unfledged Grasshoppers from Missouri, yet this took place, not in 
the autumn, but early in June as the following paragraph shows : — 
“ The grasshoppers are making sad ravages upon the crops of south-western Iowa. 
Whole fields of grain disappear in a single night. They go in large droves, and keep 
straight onward, no impediment whatever turning them from their course.”— Rock 
Island (Hi.) Union, June 17, 1867. 
Now, if the swarms that invaded Iowa in September sprang from the same source as 
those that invaded that State in June, why do we hear nothing of any Grasshoppers 
there from the forepart of June to the latter end of August? The truth of the matter 
seems to be, that the Hateful Grasshopper, in its native Alpine home in the Rocky 
Mountains, attains maturity in August, and then, according to the mysterious prompt¬ 
ings of its peculiar instinct, often takes wing for the far-distant lowlands towards the 
East; while the very same species, when hatched out in warmer climates, that is, in the 
lowlands of the Mississippi Valley, attains maturity towards the end of June, or fully 
one month earlier, and then, prompted by the same instinct that governed it in its 
native home, immediately takes wing, and usually flies off in a south-east direction; 
after which it perishes in some unknown manner. 
“ De Soto, Nebraska , Aug. 29, 1867. —Invasion of Grasshoppers, looking like a snow¬ 
storm. They show a preference for corn and potatoes.”— Monthly Rep. Agr. Rep.. 
1867, p. 311. 
“ Glendale , Nebraska , Aug. 31, 1867. — Grasshoppers now at w'ork on the corn-fields ; 
the blades and tops mostly gone ; many stalks, three-quarters of an inch in diameter, 
cut off, and many ears just glazing eaten down, cob and corn, from one to two inches.” 
— Ibid. 
“Richland, Nebraska , Aug. 31, 1867. — At noon on August 27th large numbers of 
locusts [grasshoppers] appeared, and continued to come from the North-west until 
the evening of the 29th. They still (Aug. 31st) remain, and it is probable that the corn 
will be almost or entirely lost.” — Ibid. 
“ Algona, Iowa, Sept. 20, 1867. — Grasshoppers made their appearance in large num¬ 
bers, and by the 30th had stripped gardens and tender herbage. Corn was too far 
advanced towards ripening to be much damaged- They seemed to come from the 
west or southwest.” — Ibid. p. 352. 
“ Council Grove, Kansas, Sept. 26, 1867.—Sept. 20th, Grasshoppers passing south-east 
in great numbers, dropping heavily of their numbers on farms and woodland. All seem 
to be of spring hatching. Sept. 26th, laying eggs same as last autumn, and eating every¬ 
thing in their reach.” — Ibid. p. 352. 
“ Fort Dodge, Iowa, Sejit. 30, 1867. — A swarm of Grasshoppers arrived at 1 P. M. 
Sept. 10th, and commenced work immediately upon vegetables, leaving hardly any 
buckwheat worth cutting, and stripping the leaves entirely from the corn, so that it 
looks like sticks stuck in the ground. They came again in additional numbers on the 
