This is so, and I now propose to give a general account of the conclusions so far arrived at, but I must _in limine_ state that the account must be a brief one and more suggestive than final, for the reason that the lack of accurate local data stops the way. In an inquiry of this kind it is well to work slowly out from the known. The facts which have been given will, I think, cause it to be generally agreed that in the temple of Isis at Denderah we have a structure which the inscriptions, as well as astronomical inquiry, show was certainly a temple oriented to Sirius. The other fact that New Year's Day in the Nile valley was determined for thousands of years by the heliacal rising of that star, is among the most familiar in the domain of Egyptology. Obviously, then, the first inquiry must refer to the possible existence of other Sirian temples. From 3285 B.C., when Sirius rose heliacally at the solstice, its declination has varied from 24° S. to 16½° S. in 500 B.C. The corresponding amplitudes for Thebes being 26½° and 18° S. of E. Between these amplitudes we find the following temples:-- SIRIUS. ──────────────────┬──────┬────────────┬────────────┬────────────┬───── │ │ Sea │ Hills 1° │ Hills 2° │ │ Amp. │ Horizon. │ High. │ High. │ Place and Temple. ├──────┼─────┬──────┼─────┬──────┼─────┬──────┤ Re- │ S. │Dec. │Years.│ Dec.│Years.│ Dec.│Years.│marks. │ of E.│ S. │ │ S.│ │ S. │ │ ──────────────────┼──────┼─────┼──────┼─────┼──────┼─────┼──────┼────── =Karnak= │ │ │ │ │ │ │ │ see (Temple O) │ │ │ │ │ │ │ │below (Gr.) │ 26°½ │ 24° │ 3300 │ 23½°│=3150=│ 23° │ 3050 │ 1 │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ =Dêr el-Bahari= │ │ │ │ │ │ │ │ (Gr.) │ 24½° │ 22¼ │ 2850 │ 21¾°│=2700=│ 21¼ │ 2575 │ =Dosche= │ 21½° │ 20¼ │ 2225 │ 19¾°│=2050=│ 19½°│ 2000 │ =Karnak= │ │ │ │ │ │ │ │ (Temple D) │ │ │ │ │ │ │ │ (Gr.) │ 21½° │ 19½°│ 2000 │ 19° │=1800=│ 18½°│ 1600 │ =Naga= │ │ │ │ │ │ │ │ (Temple G) │ │ │ │ │ │ │ │ (Gr.) │ 19° │ 18¼ │ 1500 │ 18° │=1400=│ 17¾°│ 1250 │ =Philæ= │ │ │ │ │ │ │ │ (Ethiopian Temple)│ 19½° │ 18° │ 1400 │ 17½°│ 1100 │ 17°│ =800=│ 2 =Denderah= │ │ │ │ │ │ │ │ (N.W. Temple) │ 18½° │ │ │ │ │ │ │ 3 ──────────────────┴──────┴─────┴──────┴─────┴──────┴─────┴──────┴───── Remarks 1