Double Glazing (W. N.)

We have no experience of double glazing as applied to Pine-houses; but you might make an experiment by having another set of lights made to put over the others in winter and be withdrawn in summer. Have you a proper boiler - one large enough to do its work well? A small boiler that does its work imperfectly is much more expensive than a larger one of more power and fitness. The consumption of fuel would not be so great actually in the case of the larger one.

Double White Hepatica (C. E. S. Baildon)

We never saw or heard of a double white Hepatica. The single white variety is by no means plentiful. Hepaticas can be produced from seed, as we saw some seedling plants of the single white variety at Mr P. J. Perry's nursery at Banbury not long since. It is said the Hepatica seeds very sparingly indeed.

Double White Hepatica?

In the course of a paper on "Hardy Spring Flowers," read by Mr Robertson Munro before the Scottish Horticultural Association last month, he stated that while there were varieties of double red and blue Hepaticas, he was not aware of a double white one being in cultivation. Mr Munro is a very high authority on such subjects; but as it seems strange, I would feel obliged if you, or any of your readers, would say if you have met with such. - Yours, etc, Theta.

E. L. S

Berberis aquifolium, Daphne laureola, Common Laurel, Cotone-aster micropbylla, Gaultheria shallon, Euonymus, Box, Ivy, Periwinkle, Privet, Laurustinus. These will suit your purpose unless the shade be very dense.

E. M

The cause of your Grapes not colouring, we consider to be too heavy a crop, in combination with insufficient ventilation. It is too late to remedy the evil now. Crop light and ventilate more freely another year, and all other things being equal, the Grapes will colour better.

E. S

Your specimen arrived so shrivelled that we could not recognise it, but suspect it is a Gillardia. We are willing enough to do our best in naming specimens sent us, but do not profess to be able to name shrivelled morsels of plants, nor to get any one else to do so.

E. St A

Divide your Christmas Ptoses either in autumn or immediately they are done flowering - the latter time is probably the best. A loamy soil of medium character as to stiffness suits them best, and they do well in slightly shaded positions, but are not particular in the latter respect.