Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
500
90
12
8
6
4
2
ONE
TWO
FOUR
SIX
EIGHT
TEN
TWELVE
5
6
7
50
3
2
1
VERTICAL DISTANCE
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
500 550 600 650 700 750 800 850 900 950 1000
STADIA READING X STADIA CONSTANT
15