56 ON A SIMPLE TRELLIS FOR CLIMBING PLANTS. 



not easily propagated. If offsets do not in a short time strike out 

 roots, the reason is because the cut surface is woody, and many 

 months, and even years, may elapse before they again form new roots. 

 I have succeeded in propagating Pilocereus senilis (Lemaire), 

 Cereus Bradypus (Lehm), and C. senilis (De Cand.), in the follow- 

 ing manner, by offsets : viz., I filled a pot with earth, and put it into 

 a larger one, so that the edge of the outer pot stood nearly an inch 

 above the inner one. The large pot, having the hole at the bottom 

 stopped up, was filled with water until it was level with the earth in 

 the inner pot ; in this earth the offsets were planted ; the whole was 

 then covered with a piece of glass, and exposed to the rays of the sun. 

 it is necessary to look afier it frequently, in order to renew the water, 

 if it should evaporate too much. In this way offsets of these made 

 roots very soon. This treatment can also be applied with favourable 

 consequences to the offsets of other kinds, whose cut surface is much 

 withered. It is necessary to keep the offsets continually damp ; and 

 in order to accomplish this they should be put into pots from eight 

 to ten inches in diameter ; and after every watering, which should 

 be repeated as often as necessary, the pot should be covered with a 

 piece of glass. The more common kinds propagate easily of them- 

 selves, and do not require much trouble or attention. 



ARTICLE IV. 



ON A SIMPLE TRELLIS FOR CLIMBING PLANTS. 



BY X. OF LANCASHIRE. 



As many of your amateur subscribers must be similarly circum- 

 stanced with myself, in having only a small greenhouse, a page in your 

 Cabinet will, perhaps, not be unprofrtably occupied by a description 

 of a simple yet useful trellis for climbing plants, the pattern of which 

 is of my own designing. Having used it for some years, I can speak 

 confidentially of its advantages.* It is cheap, (three feet high cost but 

 nine-pence, each) and can be made by any one of common ingenuity. 



* It consists of two pieces of strong wire seven feet six inches long, bent over 

 at the summit, crosswise, so as to form, at equal distances, four principal sup- 

 ports, around which I coil suitable sized wire, so as to form spaces between the 

 wires, of a diamond shape. Such 'a trellis would be three feet high, and allow 

 six inches or more for the lower parts of the principal supports to be inserted in 

 the soil inside the pot. 



