542 



MR A. J. HERBERTSON ON 



MINUTE TO MINUTE OBSERVATIONS. 



Ben Nevis Observatory. 



The Figures are those of the Aspiration-Psychrometer Readings ; but the Range of those made in the Stevenson Screen 



are given for Comparison. 









Dry. 







Wet. 







No. 



Date and Hour. 



















Notes. 

 (See Tables for other weather.) 























Max. 



Min. 



Range. 



Range. 



Max. 



Min. 



Range. 



Range. 









Asp. Psy. 



Asp. Psy. 



Asp. Psy. 



Stev. Scr. 



A.sp. Psy. 



Asp. Psy. 



Asp. Psy. 



Stev. Scr. 







1893. h. m. 



C° 



C° 



0° 



C° 



C° 



C° 



C° 



C° 





153 



Sept. 4— 8 6-13 



11-10 



10-60 



0-50 



0-06 



5-20 



4-45 



0-75 



0-U 



Stones dry throughout. 

 Sun, 2. Wind, 1. 



154 



9 1-4 



11-80 



11-60 



0"20 



0-06 



4-10 



3-65 



0-45 



0-06 



Sun, 2, only 3 minutes. Wind, 0-1. 



155 



10 3-9 



12-85 



12-58 



0-27 



0-11 



4-00 



3-25 



0-75 



0-17 



Sun, 2. Wind, 1. 



156 



11 1-6 



13-00 



12-70 



0-30 



0-17 



5-10 



4-20 



0-90 



OSO 



Sun, 2-4. Wind, 1. 



157 



12 4-11 



13-50 



12-25 



1-25 



0-50 



7-65 



5-58 



2-07 



1-28 



Sun, 4 (full). Wind, 0-1 



158 



13 4-10 



13-00 



12-20 



0-80 



0-22 



9-20 



7-00 



2-20 



1-39 



Sun, no record. Wind, or 0-1. 



159 



14 2-8 



14-20 



13-30 



0-90 



0-22 



965 



7-70 



1-95 



1-00 



Sun, no record. Wind, or 0-1. 



160 



15 1- 10 



14-10 



13-20 



0-90 



0S0 



9-90 



6-30 



3-60 



1-61 



Sun, no record. Wind, 1. No observa- 

 tion at 15h. 4m. 



161 



16 5-11 



13-85 



13-05 



0-80 



0S9 



10-10 



6-90 



3-20 



2-17 



Sun, 4. Wind, 0-1. 



162 



17 3-7 



14-00 



13-40 



0-60 



0S3 



6-80 



6-40 



0-40 



0-22 



Sun, 4, but low. Wind, 1. 



163 



18 2-8 



11-85 



11-40 



0-45 



0-06 



7-20 



6-20 



1-00 



0-17 



Wind, 1-2. 



164 



19 3-8 

 Mean Range 



11-20 



11-05 



015 

 0-59 



0-11 

 0-23 



7-05 



6-85 



20 

 1-46 



o-u 



0-76 



Wind, 1-2. 



172 



Sept. 11—8 0-5 



1-30 



1-25 



0-05 



0-28 



0-30 



0-20 



o-io 



11 



Stones \, dry J, hoar frost. Sun, 4. 

 Wiud, 1-2. 



173 



9 4-9 



1-90 



1-80 



o-io 



0-06 



0-80 



0-60 



0-20 



o-ii 



Stones dry. Sun, 4. Stevenson only 4 

 minutes. Wind, 1. 



174 



10 5-10 



3-00 



2-60 



0-40 



0S0 



1-70 



1-45 



0-25 



0-u 



Stevenson only 4 minutes. Wind, 1. 

 f°° rising to s<* and passing. Wind, 0. 



175 



11 0-6 



3-85 



2-60 



1-25 



0-56 



2-45 



1-50 



0-95 



0-39 



176 



12 4-10 



3-40 



2-70 



070 



o-n 



3-10 



2-45 



0-65 



o-ii 



f°° all round, and passing. Wind, 



or 0-1. 

 Cum. 7, overhead. Sun, 1-2. Wind, 0-1. 



177 



13 2-8 



4-70 



3-50 



1-20 



0-67 



3-40 



2-50 



090 



0-72 



178 



13-59-14-6 



4-70 



3-20 



1-50 



o-oi 



4-20 



260 



0-60 



0-56 



f" overhead and passing. Sun, 0. 

 Wind, 1. 



179 



15 2-7 



5-60 



4-00 



1-60 



OSO 



4-40 



3-40 



1-00 



0-61 



Sun, 0-2. Rise of l°-3 in dry, and o, 8 



in wet, in last minute. Wind, 1. 



180 



16 4-12 



3-90 



3-25 



0-65 



0-28 



3 50 



2-65 



0-85 



0-28 



/°° passing. Sun, 0. Stones dry. No 

 observation at 16h. 7m. Wind, 1-2. 



181 



17 2-10 



3-45 



2-60 



0-85 



0-39 



3-25 



2-25 



TOO 



0-u 



f°° passing. Wiud or 0-1. 



182 



18 1-5 



3-80 



3-45 



0-35 



0-17 



2-60 



2-20 



0-40 



o-u 



No record of fog. Stones dry. Wind, 1. 



183 



19 4-9 

 Mean Range . 



3-25 



3-20 



0-05 



o-n 



1-85 



1-80 



0-05 



0-06 



Sun down. Wind. 1. 



0-72 



0-35 



0-66 



33 





1894. 





















185 



Sept.10*— 8 0-11 



6-90 



6-60 



0-30 



0-17 



o-oo 



—0-40 



0-40 



O-ll 



Sun, 0. Wind, 2-3. 



186 



9 0-11 



7-70 



7-20 



0-50 



0-39 



—0-90 



—1-40 



0-50 



0-33 



Sun, 2. Wind, 2-3. 



187 



10 30-39 



9-35 



8-95 



0-40 



0-22 



—0-60 



—0-80 



0-20 



0-06 



Sun, 4. Wind, 1-2. 



188 



11 30-40 



9-25 



9-00 



0-25 



0-33 



—0-40 



—0 75 



0-35 



0-22 



Sun, 4. Wind, 1-2. No observation 

 at 11-36. 



189 



12 30-41 



10-20 



9-40 



0-80 



0S9 



-r-0-40 



—0-30 



0-70 



o-ii 



Sun, 24. Wind, 3. 



190 



13 30-40 



10-20 



9-30 



0-90 



0-83 



+0-40 



—0-20 



0-60 



0-22 



Sun, 4. Wind, 3. 



101 



15 30-40 



10-70 



9-70 



1-00 



VOO 



+0-40 



—o-io 



0-50 



0-50 



Sun, 4. Wind, 3. 



192 



16 30-39 

 Mean Range . 



6-90 



9-00 



0-60 



0-56 



—0 20 



—060 



0-40 



o-ii 



Sun, 4. Wind, 4. 



40 



0-32 



... 





0-30 



0-14 



Note: — Average duration of each set of Observations much longer at this date. 



