Prof. A. D. Bache on Tidal Observations. 351 
The accordance of observation and theory, after the corrections 
have been applied, is as good as the accidental errors of the sepa- 
rate results render necessary ; as will be seen from the results for 
July given in the annexed table, and for July and part of August 
as given in Diagram No. 5: but as the averages seemed to indi- 
cate that the residuals would show the laws of the phenomena, I 
discussed them further. — 
TABLE No. VIL 
Showing the value of maximum ordinates of the diurnal curve, computed from the 
moon's declination and parallax, and from the suns declination, compared with 
ordinates from observation, for the month of July. 
PART OF A TABLE FOR THE YEAR. 
; : a 
ae oe 096 . = sin 22” 0-26 . sin 20. 
July 1 1°43 66 "19 -60 
2 “93 5 "19 17 
3 -96 3 "19 43 
4 75 33 "19 26 
5 “62 22 ‘19 17 
6 37 08 19 10 
7 “30 14 2 12 
8 -36 14 ie 03 
9 ‘32 25 “18 0g 
10 +52 34 +18 ol 
II “65 42 18 07 
12 75 “47 18 15 
13 54 18 ‘ 
14 78 5a 18 10 
15 73 -53 18 02 
16 -62 55 “18 —I10 
4 $8 “53 a7 "19 
I : -48 17 29 
19 & +40 ‘iy 06 
20 52 “15 <e7. "20 
ar 57 “00 a *40 
22 41 02 a7 *22 
23 56 *33 ay "07 
24 65 45 1 "05 
25 -61 55 “1 — 08 
26 77 63 rf “00 
29 +90 65 “xe *12 
28 -86 65 s en 
2 F 76 wh . 
30 os 48 “af ‘27 
31 ‘69 -37 ‘I 18 
age, and the averages taken for the separate hours. 
of these tables is given in that an 
for each six months and for the year. 
for the half year, to show that the same law is deducible, not- 
Withstanding the irregularities of the individual results, from the 
observations for each six months. 
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: 
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i 
