d by the passage of the bubbles through MILLENEB'S EXTENSION LADDER. any traces of the prominence ; but in this I was happily dis- the solution of nitrate of silver at h, and is completely •on- The object sought in the construction of this improve- appointed, for the northern stem still remained,… … saw a prominence which, in the many changes it underwent, tionary part. This prominence was seen through the C hydrogen line in will illustrate the formation of the hydrogen clouds often The roller, B, is turned by the crank, C, either directly or the telespectroscope used by Professor Young in the…
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