728 Queries and Ans*uoers. 



The Culture and Propagatioii of the Camellia. — Will any of your readers 

 or contributors favour your publication with a clear and ample account of 

 the propagation and culture of the CameWia ? If they would, I am sure it 

 would tend to a more extended cultivation of this splendid family of ever- 

 greens, both in the open air and in conservatories and green-houses. I am. 

 Sir, yourfs, &c., an old subscriber — G. R. Sept. 28. 1831. 



The Culture of the (jfcntikna acaidis is desired by S. W. of North Brixton, 

 Surrey ; and the same lady wishes to know where she can procure the 

 Lady Bath Heartsease. — North Brixton, Sun-ey, Sept. 16. 1831. 



Scottish Roses as a Garden Hedge. — Do you think that the varieties of 

 the Scottish rose would make a good garden hedge, or would they fill up 

 the bottom of a whitethorn hedge which is become hollow ? — X. Y. Lo7i- 

 don, Aug. 29. 183L 



The Culture of Oorydnthes excelsa to cause it to blossom. — Sir, Seeing in 

 p. 492. that Mr. Henderson has succeeded in making the Doryanthes ex- 

 celsa bloom at Glasgow, in Woodhall gardens, I beg leave to say that 

 Mr. Henderson would confer a favour on me, and probably on many others, 

 if he would state in what soil and in what temperature he cultivates it ; 

 whether under glass, and whether in a stove or in the open air, and if under 

 glass then in what sized pots, and at what time of the year it makes its 

 growth ; for I have had a plant now for three years, and I am unable to 

 make it advance either under a frame or in a green-house, though I have 

 several times changed the soil ; having tried it in rich loam, in sandy loam, 

 and in peat with calcareous clay. I remain, Sir, yours, &c. — Causidicus. 

 Aug. 22. 1831. 



The Jacobcean Lily (^Amaryllis formosissima^. — Has any reader knoviU 

 this plant to produce perfect seeds in this country, such as have produced 

 young plants on being sown ? Herbert, in his treatise on AmaryXWdecB, 

 where this plant is called Spreikelk forraosissima, says that he has never 

 known it to seed in this country. Our correspondent Amaryllfdeus, for 

 whom we ask this question, had it apparently seeding in May last, but suf- 

 fered its swelling ovarium to get injured by frost. In reply to Amaryllf- 

 deus, all or most of Mr. Herbert's new genera are adopted in Sweet's 

 Hbrtus Britdnnicus, 2d edit. ; Mr. Herbert having assisted in preparing the 

 portion of that work which appertains to the AmaryWidece, as declared in 

 the preface. — J. D. 



The Culture of the Pine-apple. — Sir, Being a grower of pines, and wish- 

 ing to obtain some fai'ther information on their culture, permit me to make 

 a few enquiries on the subject. 



1 . In a Pit to be heated with hot-water Pipes, the upper pipe to heat the 

 air of the pit, and the lower one to heat the material in wliich the pots are 

 plunged; what would be the most advantageous position of this lower pipe 

 in passing through the bed, in order to heat the tan or other material 

 equally throughout, the depth of the tan being only just sufficient to hold 

 the pots plunged to their rims ? 



This plan may answer well where tan or other fermenting substances 

 cannot be procured ; but it is evident that the fire under the boiler must 

 be kept up all the year, as pine plants require heat to their roots at all 

 times. 



2. Queen Pines, which show fruit in the autumn, and ripen their fruit 

 early in spring, are generally of small pips, pointed and prominent, with 

 many very small husky leaves rising from the point of the pip and project- 

 ing upwards. They are also destitute of that fine grey bloom which is 

 natural to them, and appear perfectly green. This is not the case with 

 pines which ripen in summer. What is the cause of this difference? Does 

 it arise from mismanagement, or from causes which cannot be remedied, as 

 want of light and sun, and the natural excitement of a growing season ? 



