HINTS TO CORRESPONDENTS. P. & M. ask if running an electric (3) H. machinery steel is (4) P. W. north-seeking pole W. F. balance themselves (7) J. L. know of no special (9) S. B. a writes: It is said that the (10) H. I. Jr. asks for a mineral or sub () E. J. R. asks how many 2 gallon (12) F. A. writes: I wish to construct (13) J. B. W. asks: 1. How many cells (14) F. W. W. writes: 1. I have a hunt (15) P. P. unless of very INDEX OF INVENTIONS For which Letters Patent of the United States were Granted August 4 1885 AND EACH BEARING THAT DATE
HINTS TO CORRESPONDENTS. P. & M. ask if running an electric (3) H. machinery steel is (4) P. W. north-seeking pole W. F. balance themselves (7) J. L. know of no special (9) S. B. a writes: It is said that the (10) H. I. Jr. asks for a mineral or sub () E. J. R. asks how many 2 gallon (12) F. A. writes: I wish to construct (13) J. B. W. asks: 1. How many cells (14) F. W. W. writes: 1. I have a hunt (15) P. P. unless of very INDEX OF INVENTIONS For which Letters Patent of the United States were Granted August 4 1885 AND EACH BEARING THAT DATE., scientific american, 1885-08-22
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