GRASSHOPPERS AND CRICKETS. 43 
line down the middle of the page. At the top of one 
column write ‘‘ Resemblances’’, and at the top of the 
other column write ‘‘ Differences’’. In these spaces 
write all the resemblances and differences you can 
make out from actual observation. 
Notice with especial care the tibia of the front leg in 
order to see the ear-drum. 
Look on the under side of the wing-cover of the 
male cricket for the roughened vein used in stridulating. 
The pair of appendages at the end of the abdomen 
are called stylets. 
Make a drawing of a cricket as you see it. 
Questions. 1. How do a grasshopper’s activities 
differ from those of man ? 
2. Is it an advantage in insect-life to have the 
nervous system on the ventral part of the body? 
Why? 
3. In what respects is a segmented body an advan- 
tage to an animal ? 
4. At what time of year are grasshoppers most 
abundant ? 
5. Whence come the grasshoppers seen in the fields 
in spring ? 
6. Would it be wise to rid the world of grass- 
hoppers? Why? 
7. Why does the grasshopper breathe? What 
chemical changes occur in breathing ? 
8. What is the color of the grasshopper’s blood ? 
g. What senses has the grasshopper ? 
10. What are the differences between organic and 
inorganic things ? 
11. What are the points of similarity ? 
12. What are some of the differences between plants 
and animals ? 
Topics for Reports. The Locust Scourge. Locusts 
as Food. Howto Destroy Locusts. The Life-history 
of a Locust. The Cockroach. Crickets. Walking- 
sticks. 
