MR. BARRON ON HYBRIDISATION OV GRAPES. 
187 
berries round, part of each being black] and part white. Three 
are very early, and two are very late, and with one exception they 
are all small. Two of them have small berries, resembling the 
Black Hamburgh (female parent), with the leaves of the Black 
Monukka ; one resembles the Black Monukka in the shape and ap- 
pearance of the berries, but it is a coarse, late grape. Two of them 
have proved seedless, like the Black Monukka ; but the berries are 
round, and the one white, the other black. In no case is there 
an exact reproduction of either the male or the female parent, the 
majority of the results being decidedly inferior to either. A few 
have peculiarities which entitle them to further trial, but the 
greater part are quite useless. 
XXXIY. Meteorological Observations taken at the Eoyal Hor- 
ticultural Society's Gardens, Chiswick. Reduced by R. 
Strachan, Meteorological Office. 
The readings of the barometer and thermometers are all cor- 
rected for instrumental errors (which have been ascertained at the 
Kew Observatory), and those of the barometer are reduced to the 
temperature of 32° Fah., and to mean sea-level. 
The rain gauge is 25 feet above sea-level. 
The temperature of evaporation is regularly observed, but is not 
given here. It has been considered preferable to give the dew- 
point, which has been calculated from this observation by means 
of Glaisher's factors. 
The figures denoting the estimated force of the wind signify as 
follows: — 1, light air; 2, light breeze; gentle breeze; 4, mode- 
rate breeze ; 5, fresh breeze ; 6, strong breeze ; 7, moderate gale ; 
8, fresh gale; 9, strong gale; 10, whole gale; 11, storm; 12, 
hurricane. 
The notations of weather are, for brevity, expressed by letters, 
which signify as follows : — b, blue sky ; c, detached clouds ; o, 
overcast ; f, fog ; m, mist ; r, rain ; h, hail ; s, snow ; d, drizzle ; 
p, passing showers ; q, squalls ; t, thunder ; 1, lightning. A letter 
repeated denotes intensity. 
