147 
The accompanying plat shows the crops of this tract and the dis- 
tribution of the lantern traps in each. Forty acres were in corn, 
seventy acres in grass, thirty acres in clover and alfalfa, and twenty 
acres in oats. Two of the lanterns were in corn fields, two in clover 
Plat showing Distribution of Light-traps. 
Cemetery 
Road 
Road 
• 
• 
New pasture 
Oats 
Old pasture 
20 acres 
20 acres 
• 40 acres 
• 
• 
• 
• • 
Alfalfa 
• Clover 
20 acres 
10 acres 
• 
Corn 
20 acres 
Corn 
• 
Meadow grass 
20 acres 
10 acres 
and alfalfa, one in oats, and seven in meadows and pastures of grass. 
None were nearer than a quarter of a mile to trees on whose leaves 
the May-beetles were feeding at the time, nor farther from them 
than three quarters. To avoid attracting beetles from these trees, 
each lantern was provided with a tin shade by which its light was 
hidden on the side towards the trees nearest to it. These lights were 
