90 Shooting stars of Nov. 14th, 1867. 
little east of the Sandwich Islands. Just beyond these limits 
a small display may have been visible. In the Sandwich Isl- 
ands any meteors that may have been seen would have the 
peculiar characteristics of those seen in the Azores last year. 
20. Personal equation—An examination of the numbers 
reported in the New Haven observations shows that there is a 
very notable difference in the numbers seen by different per- 
sons at the same place, during a given interv This ue, 
in part at least, to the unequal aidenttvenias and quickness of 
eye of the observers, and to the direction toward which they. 
are looking. The person of a company who sees the largest 
number of meteors during one minute is, moreover, not always 
he who sees the largest number another minute. 
Hence we cannot rely implicitly upon the counting of one 
person to determine the minor variations of density of the 
stream of meteoroids, as we pass through it. Again, the num- 
bers seen at different places by single observers cannot be com- 
pared with the same confidence as the numbers seen by two 
parties of considerable size. Individual peculiarities may rea- 
sonably be expected to disappear to a certain extent in the 
latter case. 
21. Form s the curve of intensity—The three curves given 
in the diagrams above, as well as all the other observations of 
1867 and 1866, show that the damnation of the intensity of 
the display was less rapid than the increase. This is due, evi- 
dently, to the gradual increase 2 the apparent altitude of the 
iant toward morning. erable correction might be 
made for this cause by dividing “the numbers expressing the 
serge of the’ dispies by the sine of the altitude of the ra- 
dian 
22. Bre th of the radiant in Latitude—That the radiant 
should ek aa breadth in latitude seems necessarily to fol- 
low from the very small thickness of the stream. In one hour 
the earth moves about 20,000 miles in a direction perpendicu- 
lar to ane lane of the meteor group. The duration of the 
shower is limited to a few hours at the utmost, and in its 
greatest Anionaty to one or two hours. But if the radiant 
a breadth in latitude of only a single degree, it would seem 
to follow that the group is more than a million of miles in 
thickness, which would give us a shower lasting for days. 
23. —— of the radiant in longed, and distribution in 
perihelia of the orbits of the meteors.—That 
the sedines has length implies that the perihelia of the orbits 
are distributed oaniterst te 3 in the plane of the stream. If 
the radiant is 5° long the direction of the seg motions of 
the meteors from the two ends of the radiant differ 5°. The 
