I n the prcccding observations use was constantly made of the Ephemeris of Mr. Marth, Astron. Nachr. No. 2098 and 2100. It was not received until Sept. 2G. Iiistrunicut used was an Equatorial of 12; inches aperture, by Alvan Clark t Sons. Naguifying power 150. c: 11'. Yrifclwtt. The approximate position of the observatory is Lat. 39O 1 17' N.; Long. 6 1 1 11" 1 0 s W. from Greenwich. Thc I Glasgow, Missouri. 187i Febr. 24. Morrison Observatory, Observation de l'kclipse totalc dc lune d u 27. Fe\-ricr 1 H i 5 faitc h l'obscrvatoiro dc Toulousc par 31. P.'rwotil,. EntrCe dans l'ombre. (Temps moyoii dc Toulousc).

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Relief well planning can be a critical safety measure, ensuring readiness and rapid response in the event of a catastrophic blowout that threatens human life and the environment. Recent regulatory changes in the oil industry have spurred a demand for extensive relief well planning for shelf and deepwater wells around the world. This paper discusses well planning, trajectory design, and drilling as it applies specifically to relief wells.

Ueber eine neue Linsencombination fur photographische Sternaufnahmen. Schreiberi von Herrn David P. Todd an den Herausgeber. Dr. Dreyer's note in a late number of the Astr. Nachr. calls for my saying here that the observations which I made seven or eight years ago, in search for the 'I'rans-Neptunian planet, are soon to be published in the Proceedings ofthe American Academy of Arts and Sciences, Hoston. They include observations of many nebulous stars of the type 0 ee F.