column being 250 pounds when it is ascending and October 15 at 1 hour. 60 pounds during the descent. It is evident that as < On October 19, at 4 hours, Venus is in conjunction long as the 60 pounds pressure is evenly maintained Q with Jupiter, when Venus will be 28 minutes of are Wk the plunger… … That the speed was above the normal is stong circum- of this planet with Mercury on the morning of October stantial evidence that the tank pressure was low. Let 6 has been referred to in the section on Mercury. us suppose that it was, and that it had fallen On October 23, at 3h. 36 m., Jupiter isin…
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