NER 



635 ] 



NEW 



M Olea'nderu'lbum (white-lowered). 8. White. 

 August. South Europe. 1596. 



sple'ndens (shining). 7- Red. Au- 

 gust. South Europe. 1814. 



. ' variega'tum (variegated). 8. 

 Striped. August. South Europe. 



thyrsiflo'rum (thyrse-flowered). 5. Pink. 



July, Nepaul. 1830. 



NES^E'A. (The name of a sea nymph. 

 Nat. ord., Loosestrifes [Lythracete]. 

 Linn., 11 - Dodecandria 1 - Monogynia. 

 Allied to Heimia.) 



Stove herbaceous perennial. Divisions in 

 spring, as fresh growth commences ; cuttings 

 of young shoots, in sandy soil, under a bell- 

 glass ; sandy loam and fibry peat. Winter 

 temp., 45 to 55; summer, 60 to 80. 

 N, triflo'ra (three-flowered). 2. Blue. August. 

 Mauritius. 1802. 



NETO 'UXIA. (Named after M. Netoux, 

 a German author. Nat. ord., Night- 

 shades [Solanacese]. lAnn.^o-Pentandria 

 l-Monogynia. Allied to Nicotiana.) 



Hardy herbaceous perennial. Division in 

 spring ; cuttings of shoots, under a hand-light 

 in summer ; rich sandy loam. 

 N. formo'sa (handsome) . J. Yellow. July. 

 Mexico. 1826. 



NETTING is employed to prevent the 

 radiation of heat from walls, and the 

 rude access of wind to trees grown upon 

 them, as well as to prevent the ravages 

 of birds. 



Netting is a very effectual preventive 

 of cooling, for reasons which will be 

 stated when considering Screens gene- 

 rally ; and in connection with that, it 

 may be observed that it is not altogether 

 immaterial of what substance netting is 

 formed. Worsted is to be preferred, 

 not only because it is the most durable, 

 but because it is the best preventive of 

 a wall's cooling. We have found the 

 thermometer under a hemp net sink 

 during the night, from 2 to 4 lower 

 than that under a net of worsted, the 

 meshes being small and of equal size 

 in both nets. This can only be because 

 worsted is known to be a worse con- 

 ductor of heat than hemp ; and, not 

 absorbing moisture so easily, is not so 

 liable to the cold always produced by its 

 drying. Netting will also exclude flies 

 and other winged insects from the fruit 

 against walls, although the meshes are 

 more than large enough to permit their 

 passage. Why this is the case is not 

 very apparent, but the netting is equally 



efficient in keeping similar insects from 

 intruding into rooms if there are no 

 cross lights. If there are windows on 

 different sides of the room, and it is to 

 be presumed, therefore, also in a green 

 or hothouse, nets would not be so effi- 

 cient. 



One hundred square yards of netting, 

 according to some merchants' mode of 

 measuring, will not cover more than fifty 

 square yards of wall, for they stretch the 

 net first longitudinally and then late- 

 rally, when making their measurement, 

 and not in both directions at once, as the 

 gardener must when covering his trees. 

 Disappointment, therefore, should be 

 avoided, when ordering new nets, by 

 stating the size of the surface which 

 has to be covered. This may be done 

 without any fear of imposition. 



Mr. Richardson, net-maker, New 

 Road; London, informs us, that one 

 cwt. of old mackarel net, weighed when 

 quite dry, will cover eight hundred 

 square yards; and one cwt. of old 

 herring net (smaller meshes) will cover 

 six hundred square yards. Mr. Hulme, 

 of Knutsford, has sent us various speci- 

 mens of his nets and open canvass for 

 inspection some made of woollen and 

 others of hemp : the last does not 

 shrink after being wetted like the 

 woollen. Mr. J. Haythorn, of Notting- 

 ham, has also sent us specimens of 

 his excellent hexagonal netting. 



NETTLE TREE. Ce'liis. 



NEW JERSEY TEA. Ceano'thm ame- 

 rica'mis. 



NEW ZEALAND SPINACH, Tetrago'nia 

 cxpa'nsa, is much admired as a sub- 

 stitute for summer spinach, being of 

 more delicate flavour, and continues 

 available the whole summer. 



Sow in the seed-vessel as gathered 

 in the preceding autumn, at the latter 

 end of March in a pot, and placed in a 

 melon frame. The seedlings to be 

 pricked while small singly into pots, 

 to be kept under a frame without 

 bottom heat, until the third week in 

 May, or until the danger of frost is past. 

 Plant in rows in a rich, light soil, at 

 three or four feet apart each way. 

 Twenty plants will afford an abundant 

 supply daily for a large family. 



In five or six weeks after planting, 



