On the Climate of Strathpeffer Spa. 45 
to be a well-founded opinion that the average night tempera- 
ture is of greater consequence in relation to health than the 
maximum or day temperature. It appears from this table 
that at Strathpeffer the minima are, on the average, slightly 
TaBLE 1V.— Winter Temperatures. 
j 
| 
| | / 
| | Mean of the Minima. | Mean of the Maxima. | Mean Temperature. 
| , Royal Royal ‘ Royal 
Strath- ae Strath- bh Strath- eat 
| peffer. ah | peffer. ee |  peffer. ue 
° ° ae ° | ° ° 
| 1884-5, . 31°5 35°8 | 38°4 44°9 35°0 40°3 
1885-6, . 32°5 eco 3). work 40°6 35°8 36°1 
1886-7, .| 3271 31-4 | 415 42°3 36°8 36°8 
DS87-8, . 32°1 22°68). 4 39°F 41:0 35°9 36°8 
1888-9, .| 340 33-2 | 43-0 43-4 38°5 38°3 
1889-90, . 33°9 o4°5 | 43°5 44°4 38°7 39°4 
1890-1, . 32°9 28°7 | 42°9 39°4 37°9 34°'0 
| AVERAGE, 32°7 | 32°5 41-2 | 42°3 37°0 37°4 
| 
higher than at Greenwich—that is to say, the nights are, on 
the whole, a little warmer. Taking the entire winters, four 
times out of seven the night readings at Strathpeffer are 
slightly in excess of the corresponding readings in the neigh- 
bourhood of London. Taking the highest or day readings, 
there is a more decided difference between the two stations, 
amounting to 1°1 in favour of London. This is, however, a 
very moderate deficiency in comparison with the ten degrees 
of difference in the day temperatures of summer. The mean 
temperature of the winter (by which in this paper the arith- 
metical mean is always to be understood) is 0°:4 lower at 
Strathpeffer ; but in one of the seven winters it was exactly 
equal ; and in two others (1888-89 and 1890-91) Strathpeffer 
was the warmer of the two. It is important to observe that 
these figures apply to a short series, which happens to include 
several seasons notable for generally diffused low temperature. 
Table V. shows the general distribution of winter temperature 
derived from readings extending oyer a much longer period, 
