200 REPORT—1857. 
A B C D 
a 
‘ Weight to| Force required, 
No, Size of Instrument. Forms of Mounting. be moved, acting at a 
in Ibs. | radius of 5 feet. ~ 
1.1} : English form No. 2....... 45,000 250 
x Ente drlect eeflestor,... Geran form improved.| 19,000 20 
3. | | ; ; _ | J English form No. 2....... 8,000 45 
ra For an Sank aueaer a form improved. 600 1 
Ti z : English form No. 2....... 16,000 90 
é t For a 12-inch refractor. ietsuss form improved.| 1,200 2 
In respect to the foregoing Table, it is right to state, that, so far as Nos. 1 
and 2 are concerned, the data in columns C and D are the results of cal- 
culation ; and the same is to be understood of column D in the case of No. 3. 
The data for No. 5 are taken directly from those of No. 3, while the numbers 
appended to No. 6 give the result of actual experience. 
Report on the Experimental Plots in the Botanical Garden of the Royal 
Agricultural College at Cirencester. By James BucKMAN, F.L.S. F.AS, 
F.G.S., &¢., Professor of Geology and Botany, Lecturer on Geology, 3c. 
at the Cheltenham Proprietary College. 
Tne experimental plots in the garden of the Royal Agricultural College 
rest partly on a thin bed of forest marble clay and partly on the brashy soil 
of the underlying Great Oolite, so that, although most of the soil is of a 
heavy tenacious character, sti'l a large portion is that of the porous Stone- 
brashes so prevalent in the district, the nature of the geology being readily 
made out from the following section. 
a. Forest Marble Clay. b. White Freestones of the Great Oolite. 
Neither the staple of the land itself, nor any method of cultivation that has 
as yet been adopted renders this part of the Royal Agricultural College Farm 
better, if indeed equal, to the land of the best part of the farm; so that the 
agricultural experiments at least are not likely to suffer in value from being 
carried on too exclusively under the conditions of garden culture. 
The garden is for the most part divided into plots, the greater portion of 
which are 24 yards square—many however are double that size,—whilst small 
borders are occupied with single specimens of flowering plants, the latter 
being mostly grown for assisting demonstrations in the lecture room. 
With merely agricultural experiments, the method I have adopted is to 
first use a small plot, and then adopt either a 5-yard plot or four of these 
united, after which the matter is transferred to the farm ; so that as time pro- 
gresses, and facilities for carrying on these experiments increase, it is hoped 
that this garden may be the means of introducing new and valuable varieties 
of crops to the farmer, as well as of elucidating some interesting facts and 
principles in Botanical science. 
The plots for the present year, 1857, are employed in the growth of plants 
in the following groups :— 
— 
