Although this battery will do all that is required for a Thomson recorder or a similar instrument much more cheaply in this country than the tray battery, and with half the number of cells, I do not think it would be the case in distant countries, on account of the difficulty and cost of transport. A solid compound of chromic and sulphuric acids could be manufactured which would overcome this difficulty, if permanent magnetic fields for submarine telegraphic instruments continue to be produced by electric vortices. In conclusion, and to enable comparisons to be made, I may mention that the work this battery is capable of performing is 732,482 foot pounds, at a total cost of 1s. 6d.
[FROM THE SCHOOL JOURNAL.]
PERFECTLY LOVELY PHILOSOPHY.
CHARACTERS: Laura and Isabel, dressed very stylishly, both with hats on. Enter hand in hand.
Laura. My dear Isabel, I was so afraid you would not come. I waited at that horrid station a full half hour for you. I went there early on purpose, so as to be sure not to miss you.
Isabel. Oh, you sweet girl!
L. Now, sit right down; you must be tired. Just lay your hat there on the table, and we'll begin to visit right off. (Both lay their hats on the table and stand near by.)
I. And how have you been all the ages since we were together at Boston?