524 Queries, Answers, Remarks, Sfc. 
Culture of Annuals. — Can you give me any information as to the culture 
of Argemone jnexicdna, Daftira Tdtula, Linuin verticilldtum, Lobelia grdcilis, 
Luplnus micrd7tt/ms, Mimtdits guttdtus, Nigella datnascena; or refer me to any 
work on the subject? Some oif them, I have no doubt, must be sown in a hot- 
bed; but it is well known tliat some sorts of annuals (the Cldrkia pulchella, 
for instance) grow much better in the open ground. 
Manchester, March 22, 1832. A Subscriber. 
Answer. — The Argemdne inexicdna, Lhium verticilldtum. Lobelia grdcilis 
Luptnus micrdnthus, and the Nigella daviascciia, may all be sown on the open 
border, in almost any sort of soil or situation. The Mlmulus gjdtdtus should 
also be sown in the open border; but it is apt to perish unless the soil be light 
and sandy. The Datura Tdtula does the best when raised in a hot-bed, and 
when large enough, potted in light soil, and eventually turned out into a 
warm border, composed of light sandy soil. — Conductors. 
Harrison and Curtis's Mode op Glazing. — First, Will not the saving of 
paint alone on this system give it a decided advantage over every other ? 
The houses under my care, although not extensive, with every possible eco- 
nomy, cost £60 for painting once over, last summer ; and as this should take 
place every three years, the annual expense will be £20, which sum, applied 
to the erection or improvement of hot-houses, would accomplish much, and 
ought to be borne in mind. 
Second, — Will not the facility with which the squares can be fitted in, give 
this system a pre-eminence? There are eight different ways in which the 
squares may be fitted. If any should be found diflicult to bed, it may be 
easily rectified, which is a recommendation of some importance. 
Third, — There is no shade from the projecting sash bar. This is another 
point which every person about to erect new houses would do well to bear in 
mind. 
Fourth, — Will not the sash bar come at much less expense than any other, 
being made of only half the materials, and taking but half the labour in for- 
mation ? 
Fifth, — Can there be that liability to the serious expences incurred by the 
glass breaking, from frost? Will not this be removed in a great measure by 
the roof being more free from wet than in the projecting-bar system? This 
requires consideration on the part of those who have houses with a less angle 
than thirty degrees. Are not 20 squares of glass broken by frost to one any 
other way ? 
Sixth, — In case of frames, Sec. subject to be covered with mats, should not 
the stiles of the lights, and perhaps the middle bar of each, project as usual, 
to prevent the glass being broken or fractured when the coverings are thrown 
on wet? 
Seventh, — Does any person experienced in the erection, &c., of houses 
covered with glass, doubt whether this system will gain the ascendancy 
over every other that has hitherto appeared ? 
Eighth, — Will any doubt arise as to the wet entering in at the junction of 
the squares ? Do we ever experience this when the fracture is in a parallel 
direction with the sash bar? 
Ninth, — Will not these roofs always be more free from filth than those with 
projecting bars? Will they not always be perfectly clean? 
Tenth, — Will not the laps of the squares, by being kept much cleaner, pre- 
vent the frost from breaking them? Does not the filth attracted by the sash 
bar collect there, and with the water expand at the time of frost? 
Eleventh, — Will there not be found a material difference in the expense of 
keeping the roofs in repair, arising from two causes. — 1st, the expedition 
with which a broken square can be replaced by a perfect one ; and 2nd, the 
quantity of squares that are often broken or fractured by the shock given in 
the common mode of removing broken ones, particularly on metallic roofs .' 
