372 H. A. Hazen—Projection of Lines of Equal Pressure. 
700’. 800". 
Press’e 28’'°7.| Press’e 29’'2.|Press’e 29''*7. Press’e 28'''6.| Press’e 29''1./ Press’e 29'''6. 
r. 
©. | RHE) © [ROE] © RE |e [RE] © [RUE] | Ra 
80°! “702 | -102 | -714 | "103 | -726 | 105 || .20°| -800| 102] -814/ -103]| 828] °105 
45 | °709 1-193 1-721 | 104|°733|°106 |} 75 | -809) 103} -823/ -104] -837) °106 
70 | 716 | °104 | -729 | 106} -741 | -107 |} 70] °817|-104| -831/-105| -845/°107 
65 | 724 | 105 | -736 | 107 |-749|-108 |] 65 | -826) 105] 840) °107| °854| 108 
60 | ‘731 | 108 | -744 | -108|-757|°110]) 60| *834)°106] -849| °108] -863) °110 
55 | °739 | 107 | -752 | 109 | -765 | -111 55 | °843/°107] -858|°109] -873)°111 
50 | -747 | -108 | -760 | °110|°773 '°112 || 50} °852!-108] -867|-110] -882)°112 
45 | “755 | °110 | -768 | 111 | °782|°113|| 45] -862/°109| -877}-111]| -892/°113 
40 |°%64} 111) -777 | -113|}°790|°115 || 40) -871]-111} -887/°113] -902] "115 
35 | 772 | 112 |-786|-114|-799|°11G6]| 35 | -881|°112} -896| 114] -912] "116 
30 | °781 | 113 | -795 | -115 | -808/-117 || 30] *891/°113| -907| 115) °922| °117 
25 | °790 | -115 | -804|°117|-817}°119]} 25} -901}-115 | -917| 117] °933) "119 
20 | 799 | -116 | -813 | 118 | 827 | 120 || 20] -912/-116] -928/-118]| -944| °120 
15 | °808 | 117 | 822 | -119| 836) -121]| 15] -922}-117| -939!-119]| °955) °121 
10 | °818 | 119 | -832 | -121 | °846 | +12 10 | -934| -119} -950| °121| -966] °123 
5 | 828 | -120 | -842 | -122|-857|-124/] © 5 | -945]-120] -961/ -122] -978) 124 
0 | -838 | -122 | -852 | -124 | -867 | -126 0| -956] 122 | -973] -124] -990) "126 
—- 5 | 848 | -123 | -863 | -125 | -878 | 127 |/— 5| -968| -123| -985/ -125 |1-002| "127 
—10 | °859 | -125 | -874 | -127 | 889 | 129 |I—10] -980| -125| -997| -127 /1°014/ ‘129 
—15 | 870 | -126 | -885 | 128 | -900 | 130 ||—15 92} 126 |1°010; 7129 |1°027)| 7131 
—20 | -881 | -128 | -896 | 130 | -911 | °132 ;;—20 |1-005} -128 |1-023) -130 |1-040) °132 
—25 | -892 | -130| -907 | -132 | 923 | 134 || —25 11-018] +130 |1°036) °132 |1°053| “134 
—30 | -904 | +131 | -919 | -134 | -935 | -136 ||—30 |1-031| -131 |1°049) -134 |1°067| 136 
—35 | 915 | 133 | -931 | -135 | -947 | -138 || —35 |1-045] -133 |1-063) -136 |1-081| “138 
—40 | -928 | -135 | -944 | -137 | -960 | -140 || —40 |1-059] -135 |1°0781 -138 |1:096/ °140 
900’. 1000’. 
Press’e 28''°5.| Press’e 29’'°0.| Press’e 29'''5. Press'e 28''*4.|Press’e 28''-9.|Press’e 29''"4. 
sis a Diff. 
6. |e) | ME) o. | pe c. | Bit] o. | pit. o. | Rie 
80°} -899| 102) -915| 103 | -930|-105 || 80°] -997| -102 1 ra “103 |1°032/ 105 
75 | -908/°103 | -924|-104/ -940|-106 || 75 |1-007| 103 |1-025) -104 |1°043) “106 
70 7| 104 | -934/°105| -950|-107 || 70 |1-018| -104 |1-036 -105 |1-053/ “107 
65 | *927| 105 | -943|°107) -960| 108 || 65 |1-028| 105 |1-046 °107 |1°065) "109 
60 | -937| -106| -953| 108] -970/ +110 || 60 /1-039] ‘106 |1-058 -108 |1-076) "110 
55 | -947/-107| -964|-109| -980|-111|| 55 |1-050| -107 |1-069 -109 |1-087| ‘111 
50 | -957!°108 | -974/ 110} -991! -112 |) 50 |1-062! “108 |1-081) -110 |1-099 112 
45 968] ° 10 | -985/°111 |1-002|-113 || 45 [1-074 -110 |1-093) “111 |1-111) “113 
40} ‘979 "111 “113 /1-013| °115 | 40 |1°086| “111 |1-105, -113 |17124) ‘115 
35 990° 12 11-007] 114} !-024| 116 |) 35 [1-098] “112 |1-127| -114 |1°136) “116 
30 |1-001| 113 |1-018) “115 |1-036| 117 || 30 |1-110| 113 |1-130) -115 |1:149) "117 
25 | 1-012) 115 |1-030| “117 |1-048| 119 || 25 |1°123| “115 |1-143. “117 |1°163) “119 
20 |1°024| ‘116 |1-042) °118 0} -120|} 20 {1:136| -116 |1-156 °118 |1-176) “120 
15 |1°036) 117 |1-054) °119 9) “12 15 |1'149} °117 |1-170) «120 |1°190| “122 
10 [1-048 119 |1-067) "121 |1-085| *123 || 10 1-163] 119 |t-184) -121 |1-204) "128 
5 |1°061, 120 |1-080) “122 |1-098! -124 5 {1-177| -220 (1-198 122 {1-219} "125 
0 |1°074) °122 |1-093) °124 |1°112} 12 O [1-192| 122 |1-213) 124 |1-233) °126 
— 5 |1°087| 123 |1-106) “125 |1-125) -127 5 |1°206| *123 |1-228) +125 249) "128 
—10;]1-101) °125 |1°120) 127 |1-140) 129 || —10 |1-221) 126 |1-243) +127 1-264) 129 
—15,|1-115) +126 |1-134) +129 /1-154/ 131 ||—15 |1-237) 126 |1-259) +129 -980 °131 
—20,|1°129) *128 |1°149) °130 |1°169) °132 || —20 |1-253) “128 |1-275| -131 1-297 +133 
“26 17144) “130 1°164) “132 4| -134 ||— 25 |1°269 a 1°291| -132 |1°314| +135 
17159) °131 /1-179| °134 {1-199} -136 || —30 |1-286) -132 11-308 fies At 136 
I its 133 |1°195| °136 {1-215} +138 ||—35 |1°303 das 1°326| -136 "138 
1-190} °135 |1°211/ -138 |1°232! -140 |}|— 40 |1°321| -135 |1°344| -138 an 140 
