390 
MR. F. C. PENROSE ON THE ORIENTATION OF GREEK TEMPLES. 
Delj)hi. Latitude 38° '27' 33"— continued. 
Name of 
temple. 
Orienta¬ 
tion angle. 
Ref. 
letter. 
Details. 
Stellar 
elements. 
Solar 
elements. 
Name of 
star. 
Later 
227° S’ 
A 
AmjDlitucle of star or siui .... 
-44° I'vr. 
-7° 42' E. 
temple 
P> 
Corresponding altitude. 
3° 30' 
2° 49' 
of 
C 
Declination. 
- 30° 18' 
-4° 1.5' 
Id Lupi; 
Apollo. 
D 
Hour’ angles 
3 h 45in 
7 h gm 
setting. 
E 
Depression of .sun when star heliacal 
— 
16° 
F 
R. A. 
1211 28“ 
23'' 21“ 
G 
Approximate date—585 B.C., March 9. 
Delos. 
The Isle of Delos, besides a group of five (or more) temples of the classical period, is 
remarkable for containing a very ancient religious structure, certainly one of the 
most ancient shrines now remaining in Greece or her colonies. A short stay in the 
sland enabled me to examine this example, but I was obliged to confine myself to 
this one. 
This Cynthian Grotto has no structural flank walls, but two masses of natural rock 
are connected by a solid roof formed by large wrought stones placed rafterwise, and 
well jointed at their meeting line at the apex. This meeting line is the only leading 
architectural line in the whole structure. The access was from the east, where are 
remains of a wall of jDolygonal masonry. 
The west end of the grotto was closed ; near it there seems to have been a statue. 
The northern jamb of the doorway in the eastern wall remains. The return or 
southern face of this door jamb is not parallel with the line given by the roof stones. 
As it is probable that this obliquity may have had some astronomical reference to the 
star which seems to have been connected with the line derived from the ■ roof, I have 
added elements on the hypothesis of such an intention. 
This doorway is to all appearance of later work than the roof, and this seems to 
point out that a structural alteration Avas made so as to follow the star. 
Delos. Latitude 37° 22' 
Name of 
temple. 
Orienta¬ 
tion ange . 
Ref. 
letter. 
Details. 
Stellar 
elements. 
Solar 
elements. 
Name of 
star. 
Grotto 
A 
Amplitude of star or sun .... 
+ 0° 13' E. 
- 6 ° 2 ' 
on Mt. 
B 
Corresponding altitude..... 
3“ 30' 
0 0 
Cynthus 
276° 2' 
c 
L)eclination. 
-^ 2 ° 18' 
-H 4° 47' 
sacred to 
D 
Hour angles. 
Depression of sun when star heliacal 
5 h 49 m 
Gh 46m 
a Libra3; 
Apollo. 
E 
— 
12 ° 
rising. 
F 
R. A. 
llh 47 m 
12" 44“ 
G 
Approximate date— 1550 B.C., October 5. 
