18 
POPULAR SCIENCE REVIEW. 
of independent determinations by myself and many other 
observers confirming each other very exactly : — 
■icr. Apparent duration of the 
■ wo ’ Radiant Point. 
I. July — Nov. 
II. July 21— Nov. 13 
III. July -Mar. 
IV. Aug. 3 — Nov. 13 
V. July 6 — Dec. 
VI. Aug. 6 — Nov. 12 
VII. July 25 — Dec. 6 
Vm. July 25— Dec. 8 
IX. Aug. 6 — Dec. 27 
X. Aug. 29 — Dec. 
XI. Sept. 15 — Jan. 
XII. Sept. — Dec. 
XIII. Sept. — Feb. 
XIV. Oct. 11— Feb. 16 
XV. Nov. 1 — April 12 
XVI. April 21 — Dec. 
XVII. July 26— Oct. 31 
XVIII. April 19— Nov. 15 
XIX. June — Oct. 
XX. June — Dec. 
Position of 
No. of 
Radiant Point. 
Radiants 
R. A. Decl. 
averaged. 
7*2 + 52 : 1 
22 
7-7 + 35-9 
14 
30-2 + 36-0 
20 
43*9 + 25-1 
13 
46-2 + 45*9 
22 
61-2 + 36-4 
16 
62-0 + 48-0 
12 
69*5 + 65-2 
10 
76-1 + 32-2 
19 
80-4 + 22-7 
14 
106-1 + 11-9 
13 
108-5 + 24-2 
15 
132-3 + 46-9 
21 
132-5 + 20-8 
11 
181-1 + 34-7 
15 
282-7 + 57-9 
21 
290-6 + 69-7 
14 
315-5 + 60-0 
23 
332-8 + 48-6 
17 
335-7 + 62-7 
17 
Approximate 
Star. 
a Cassiopeiae. 
Andromedse. 
(3 Trianguli. 
e Arietis. 
a Persei. 
£ Persei. 
H Persei. 
c Camelopardi. 
/3 Tauri. 
I Tauri. 
(3 Canis Min. 
S Geminorum. 
X Ursse Maj. 
c Cancri. 
y Comae. 
o Draconis. 
d Draconis. 
a Cephei. 
Lacerta. 
S Cephei. 
These average positions each represent the focus of a series 
of well-defined meteor-showers, clustering near together at 
successive epochs. The following diagram shows, in two cases, 
(Nos. III. and V.), the individual radiants from which they are 
derived, which may be taken as fair samples of the whole : — 
Fio. 1. Radiant points of meteor-showers near (3 Trianguli and a Persei (30 o, 2 
+ 36°-0 and 46°-2 + 45°-3). 
