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but afterwards they require fre- 

 quently to be refrefh'd therewith ; 

 and as the green Leaves advance, fo 

 you muft be careful to give them 

 Air, in Proportion to the Heat of 

 the Weather, and the Bed in which 

 they are planted ; for if they are 

 forc'd too faft, it will caufe their 

 Flower-ftems to run up very weak 

 and tall } but the Flowers will be 

 fewer in Number, and much fmaller 

 than when they are brought up 

 hardier. As the Stems advance, fo 

 you muft raife your Coverings, and 

 increafe the Proportion ot free Air j 

 and in the Middle of May a flight 

 Covering with Mats will be fuffi- 

 cientj for then you muft harden 

 them by Degrees to bear the open 

 Air. When the Flowers begin to 

 open, the Pots (hould be remov'd 

 into Shelter j for if they are per- 

 mitted to continue abroad, the Wet 

 will foon deface the Flowers : but 

 if they are skreen'd from Wet, and 

 the violent Heat of the Sun, they will 

 continue in Beauty a long Time. 



Thofe Roots which are planted 

 ]ater in the Seafon, will require a 

 Icfs Degree of Heatj fo that if the 

 Hot-bed does but bring them well 

 up above-ground, the Heat of the 

 Sun will be fufficicnt for them af- 

 terwards, provided the Seafon be 

 not very cold and wet j for if it 

 (hould happen to prove fo, you 

 muft add frefh Warmth to the old 

 Bed, or remove the Pots to a new 

 one to bring them foiward, other- 

 wife they will not flower tkat 

 Seafon. 



Tho Double-flower 'd Sort bein;^ 

 propagated by Oft-lets, I iVisli fet 

 down the Method us'd by Monf. de 

 la Court, as I obferv'd when 1 was 

 ztLeydcn, In the Aurun^.n he takes 

 up the old Roots foon afrer their 

 Leaves decay, and preferves them 

 in a warm Room until the Spring, 



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at which times he takes off all the 

 0£F-fets from the old Roots j then 

 he plants the ftrong Roots in the 

 manner above directed for the fingle 

 Sort: but the Ofi-fets he plants 

 about four Inches afunder, upon a 

 frefli Hot-bed cover'd over with 

 very rich Earth j this Bed is arched 

 over with Hoops, and clofely co- 

 vered With Canvas and Mats, which 

 are continu'd on during the Spring 

 Months while the Weather is cold 5 

 but as the Summer advances, fo 

 the Coverings are remov'd, and 

 the Plants fuffer'd to enjoy the free 

 open Air until the Autumn follow- 

 ing, that the Nights begin to be 

 cold, when he covers them as be- 

 fore, until the Leaves are quite wi- 

 Aer'd off, at which Time he takes 

 fhem up and preferves their Roots 

 in dry Sand in the Green-houfe, un- 

 til the flicceeding Spring. 



By this Management, I obferv'd 

 fome Hundreds of Roots of this 

 Plant, in the Gentleman's Garden 

 above- mention'd, which were in 

 Flower, and a large Quantity of 

 younger Roots, which were for the 

 Succeeding Year i (for thefe Roots 

 do never flower two Years fuc- 

 cefllvely) : But were it not for the 

 Rarity, more than the Beauty of 

 the Flower, few People would covet 

 to have it i for the lingle Sort is by 

 far the fairer Flower, and opens 

 much better, as do rhofe of the 

 White Lily, and Ibme others of 

 that Kind, the Single Flowers of 

 which are much preferable to the 

 Double j but the Double being more 

 rare, are often coveted. 



HYDROCOTYLEi Water Na- 

 vel-wort. 



This Plant grows in great Plenty 

 in moift Places in moft Parts of 

 England, and is never cultivated for 

 Ufe, fo I fliall pafs it over with 

 only naming it. 



HYDRO.^ 



