106 



REPORT ON 



Horizontal Intensity. Observations of Vibrations. 





Valparaiso, April 13, 1866. 



Flamenco Island, Panama Bay, May 14, 1866. 



No. 



Time P. M. 



No. 



Time P. M. 



Time of 150 

 vibrations. 



No. 



Time A. M. 



No. 



Time A. M. 



Time of 150 

 vibrations. 



o 



IO 



20 



30 

 40 



50 



2" 45 m 2 3 B -6 

 2 46 21.8 

 2 47 21.2 

 2 48 19.6 

 2 49 19.0 

 2 50 17.8 



Extreme sea 

 At beginn 



150 

 160 



'7° 

 1 So 

 190 

 200 



[e readii 

 ing . 



3>> o m 6 s . 2 

 3 » 4-6 

 3 2 3.6 

 3 3 2.4 

 3 4 0.6 

 3 4 58.6 



14- 42 s .6 

 14 42.8 

 14 42.4 

 14 42.8 

 14 41.6 

 14 40.8 





 10 

 20 

 30 

 40 

 50 



gb j m IT s^ j,j 



8 51 5.1 160 

 8 51 59.0 170 

 8 52 52.8 180 



8 53 46-5 190 

 8 54 40.4 200 



Extreme scale readii 

 At beginning . 



9 h 3 m 37 a -8 

 9 4 3 ! -4 

 9 5 25.2 

 9 6 19.0 



9 7 i3-° 

 9 8 6.9 



13™ 260.4 

 13 26.3 

 13 26.2 

 13 26.2 

 13 26.5 

 13 26.5 





Mean . . . 



gs, 



• • 57-8- 



14 42.17 



[01. 5 

 8c. 2 



Mean ... 13 26.35 



'gs, 

 . . . 58.2 — 101.0 





Temperature .... 66°. 5 

 Time of one vibration . 5 s .88l 





Coefficient of torsion . . . v = 



2.78 div. 

 

 76 





Time of one 



vibration. . . 5 s . 3 



San Lorenzo Island, April 26, 1866. 



Acapulco, May 30, 1866. 



No. 



Time P. M. 



No. 



Time P. M. 



Time of 150 

 vibrations. 



No. 



Time A. M. 



No. 



Time A. M. 



Time of 150 

 vibrations. 





 10 



20 

 30 

 40 

 50 



12° 40™ 6 s . 9 

 12 41 3.0 

 12 41 59.0 

 12 42 55.0 

 12 43 51.0 

 12 44 47.1 



Extreme sea 



150 

 160 

 170 

 180 

 190 

 200 



e readin 



I2 h 54m 7 s. 4 



12 55 30 



12 55 59.2 



12 5 6 54-9 

 12 57 50.8 

 12 58 47.4 



I4 m o».5 

 14 0.0 

 14 0.2 

 13 59-9 



13 59-8 



14 0.3 





 10 

 20 



3° 

 40 



5° 



8" 32" 3».S 

 8 32 57.0 

 8 33 50.6 

 8 34 43-9 

 8 35 37-o 

 8 36 30.6 



Extreme sea 

 At beginn 



150 

 160 

 170 

 180 

 190 

 200 



.e readin 



8° 45 m 23 s . 4 

 8 46 17.2 

 8 47 10.2 

 8 48 3-7 

 8 48 57.0 

 8 49 5°-5 



13" I9».6 

 13 20.2 

 13 19.6 

 13 19.8 

 13 20.0 

 13 19-9 





Mean . . . 



g s > 

 . . . 6t 



14 0.08 



Mean . . . 

 gs. 



13 19-85 









3 — 89.O 

 . 10 div. 

 

 01 





65. 



2— 95.0 



3.40 div. 



.0 



S3 2 





Coefficient 

 Temperature 

 Time of one 



' torsion . . . v = 

 89° 



Coefficient 



f torsion . . . v = 

 89° 





vibration ... 5 s . t 



Time of one 



vibration . . . 5 s . _ 



Payta, May 7, 1866. 



Acapulco, May 30, 1866. 

 Inertia ring on magnet. 



No. 



Time A. M. 



No. 



Time A. M. 



Time of 150 

 vibrations. 



No. 





 10 



20 

 30 

 40 

 50 



Time A. M. 



No. 



Time A. M. 



Time of 150 

 vibrations. 





 10 

 20 

 30 

 40 

 5° 



9 h 2i m 9". 8 

 9 22 4.4 

 9 22 59.2 

 9 23 53.6 

 9 24 48. 2 

 9 25 42.8 



Extreme sea 

 At beginn 



150 

 160 

 170 

 180 

 190 

 200 



e readin 



9" 34 m 49"-4 

 9 35 44- 

 9 36 38.6 

 9 37 33-2 

 9 38 27.6 

 9 39 22.3 



I3 m 39 s - 6 

 13 39- 6 

 13 39-4 

 13 39-6 

 13 39-4 

 13 39-5 



gh 46m (js_ 2 



9 47 17-4 

 9 48 26.5 



9 49 35- 2 

 9 5o 43-8 

 9 51 52-4 



Extreme sea 



150 

 160 

 170 

 180 

 190 

 200 



e readin 



10° 3™ i9 B -5 

 10 4 28.2 

 10 5 37.0 

 10 6 45.6 

 10 7 54.4 

 10 9 3.2 



17™ io". 3 

 17 10.8 

 17 10.5 

 17 10.4 

 17 10.6 

 17 10.8 





Mean . . . 

 g s > 



13 39-52 



Mean . . . 



gs : . . ,6. 



17 10.57 

 : — 103.7 







S— 92.2 

 .20 div. 

 5 



[63 







65. 



1— 94.8 

 t-55 div. 

 •5 

 70 





Coefficient 

 Temperature 

 Time of one 



'. torsion . . . v =r ; 



Coefficient 



f torsion . . . v = 





vibratio 



n . . . 5 a .< 



Time of one 



vibratic 



n . . 6».i 



