M. de Zach’s Agronomical Objections* 143 
Father le Fevre’s obfervations with a refledor 55 inches 
focal length, magnifying 300 times. 
Time by the 
clock. 
Apparent 
time. 
IMMERSIONS. 
h. 
h. 
Grimaldi touches the fhadow 
7 
4 1 
43 
7 
53 
37 
Kepler touches the fhadow 
7 
5 2 
2 
8 
n 
C ) 
57 
— all in the fhadow 
7 
53 
24 
8 
5 
19 
Copernicus touches the fhadow 
8 
0 
22 
8 
12 
17 
all in the fhadow 
8 
2 
26 
8 
14. 
2 1 
Mare Serenitatis touches the fhadow 
8 
16 
7 
8 
28 
2 
all in the fhadow 
8 
26 
2 
8 
37 
O 
58 
Mare Crilium touches the fhadow 
8 
33 
28 
8 
45 
2 5 
all in the fhadow 
8 
36 
5 6 
8 
48 
S 3 
Total immerlion - - 
8 
38 
54 
8 
50 
5 2 
EMERSIONS. \ 
Beginning of theeroerfion 
10 
T 9 
42 
10 
31 
47 
Grimaldi emerged 
10 
2 3 
24 
10 
35 
29 
Kepler all out of the fhadow 
10 
35 
43 
10 
47 
49 
Copernicus all out 
10 
43 
4 
JO 
55 
10 
Mare Serenitatis all out ■ 
10 
57 
19 
1 1 
Q 
26 
Crilium all out - 
1 1 
1 S 
50 
1 1 
27 
57 
End of the eclipfe * 
n 
20 
22 
1 1 
22 
30 
Total duration - 
3 
39 
20 
The obfervatioii of the vernal equinox was made at the 
gnomon. The height of this gnomon, taken from the center 
of the hole by which the beams of the fun come in, is 1878 . 
lines of a French inch ; the diftanee from the bottom of the 
: gnomon to the equinodial point is 1,9284 the diflan ce from the 
upper limb of the fun’s image to the equinodial- point was 
i found 16,7 ; the diftanee from the under limb 23,4 the dia- 
meter of the hole = 6 ; therefore the diftance from. the bottom 
to the upper limbi 928 - 16,7 + 3 rr 1914,3, to the under limb 
1928 + 23,4-3 = 1948,4; which gives the time the equi- 
3 nox happened the 2 . 0 th of March, 5 h. 5 2" P.M. 
4- Obfervations, 
