The uncertainty of the weather in this month requires the operator to be constantly on guard, to ward off danger, either from frost, snow, or cutting winds. The temperature observed last month must be continued, but not exceeded, which would cause premature vegetation, of which the result and effects have already been frequently observed. Always kindle the fires in time, to prevent the heat from being lower than what has been mentioned, lest a severe frost should take, as then a considerable lapse ensues before the fire has any effect, and if the wind blows high, the result might be injurious, unless the house be very close.

OF SHUTTERS.

The benefit of these in severe weather is of material service, for the preservation of an even temperature in the house during the night, when changes are not observed, but they ought never to remain on through the day when the fire can be properly attended to. If the front and the lowest sash of the roof are covered with these, it is generally sufficient. They should be made of half inch boards, closely grooved together, having a cross bar in the centre, and one at each end with one at each side, which will make them substantial. If they are frequently painted with care, they will last many years. No snow ought to be allowed to lay on these while they are on the glass, for reasons that we have assigned. See January and February.

Some adopt double panes of glass to supersede the use of shutters, which, they think are attended with considerable labour, (at the most only ten minutes a day while in use.) The sash frame is made a little deeper, so as to allow half an inch between the panes of glass. The one is glazed from the out and the other from the inside. It appears to answer the purpose tolerably well, but the glass must be both fine and even in the surface, lest a lens should be produced, and cause a focus, which would evidently hurt some part of the plants. We are almost confident that we have seen this effect in some instances. There must be a small hole about an eighth of an inch in both ends of each row of glass to allow a current to dry up the moisture that may arise.

OF PLACING BULBS, &c. IN THE HOT-HOUSE.

If any Hyacinths or other Dutch roots are wanted to flower early, a few of them may be put in the Hot-house near the front glass, which will greatly tend to forward their time of flowering. By having some brought in every two weeks, a continued succession of bloom will be kept up.

CalceolÀrias. Two or three plants of the fine blooming kinds may be placed in this department, towards the end of the month. Divide the roots as soon as they begin to grow, leaving only one stem to each root, which put in a four inch pot, enlarging it as soon as the roots extend to the outside of the ball, that by the month of May they may be in seven or eight inch pots, in which they will flower superbly. Give AlstroemÈrias the same treatment.

GENERAL OBSERVATIONS.

If there is a tan bed in the house, and it was renewed in September, the pots should now be plunged therein. The violent heat will partly be over, and the plants are not so liable to suffer at root in this as last month. It will in part prevent the plants from being affected by sudden changes of temperature. Be attentive in keeping all insects completely under. This is the period that these are most neglected, but by attending to the modes of their destruction, as already given, no species of them will either be hurtful or unsightly. Syringe the plants about twice a week, and always remember that decayed leaves or litter of any description do not beautify healthy plants, neither do they form a part of a well kept Hot-house.