ABSTKACTS. 



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4 inches too high or 4 inches too low— the latter seems to do but little, if 

 any, injury. Mixing chalk, flint, and gravel in hole when planting proved 

 disadvantageous, whilst peat and good loam prove advantageous. 

 Removal of blossoms has somewhat increased size of leaf and size of tree ; 

 if blossoms were removed one year blossoming energy seemed to be 

 increased in the following. 



The method used in comparing size and vigour of trees is the 

 weighing of leaves, measurement of girth of stem, and height and spread 

 of tree.— C. H. H. 



Plant Lice. By J. J. WilUs {Gard. Chron. No. 768, p. 214 ; Sep- 

 tember 14, 1901). — An account is given of the structure, habits, and 

 singular methods of reproduction of these insects, and the best method of 

 destroying them. — G. S. S. 



Plants, old and rare, Descriptions of {Die Gart. p. 103 ; 

 Nov. 30, 1901) .—Leucojum vernum, fl. pi. 

 Galantlius viridescens and G. flavus. 



Alyssum saxatile, fl. pL, like the common yellow flowering plant, but 

 with double flowers. 



Clematis erecta, fl. pi. — A herbaceous non-climbing form with double 

 white flowers. 



Adonis vernalis, fl. pi. — A spontaneous German plant with monstrous 

 double yellow flowers. 



Hesperis matronalis lilacina, fl. pi., and jnorpurea, fi. pi. — The double 

 lilac and purple Rocket. 



Delphinii " grandiflorum, fl. pi. — The true old Siberian Larkspur ; a 

 perfect perer al, fibrous rooted, with finely cut foliage, ebony black 

 stems, and rose-shaped double dark-blue flowers. The almost as rare 

 single-flowering species dift'ers only in the single flowers. Both are 

 dwarf, growing not over 2 feet in height. 



Iris pallida fol. aur. varieg. — A pretty foliage plant. 



Scilla bifolia rubra (very rare), with bright rosy flowers. 



Primula acaulis rubra, fl. pL, and rosea, fl. pi., with crimson and 

 salmon-rose flowers. 



Orobus vermis, fl. pi., and 0. versicolor, fl. pi. — Both rare forms, with 

 double purple and whitish flowers. 



Lilium mcirtagon, fl. pi. — Like the double Tiger Lily, this plant has 

 perfect double purple flowers. 



Lilium chalcedonicum punctatum, with handsome scarlet-spotted black 

 flowers. 



Hepatica triloba atrocoerulea, fl. pi. Exceedingly rare. The ordinary 

 double blue Hepacica is not quite as handsome and distinct, which has 

 larger deep blue flowers. 



Orchis folio sa alba and Gentiana acaulis alba. — The former almost 

 extinct, and the latier at least very rare. 



Narcissus tria7idrus pulchellus, N. cermms, N. calafhiiiiis, N.odorus, 

 fl. pi. — Still known in English gardens, although becoming very rare. 



Ourisia cocciuea. — Of creeping habit, primula-like leafage and hand- 

 some scarlet flowers. 



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