624 ANNUAL, REPORT OF THE Off. Doc. 



superior. I can say that some of the best Dracaena's I ever grew 

 were grown in nothing but spliaguum moss and fed with Clays fer- 

 tilizer, which I like best of all, as it has given me more satisfaction 

 than any other. 



I will now give a list of 25 varieties of plants that we have in 

 our collection. I will not mention any ferns or palms, which would 

 make this paper too long, but which might be taken up at some 

 future date. 



Araucaria, robusta compacta. 



Aglaonema, coetata and pictum. 



Alocasias, Sanderiana noblis, watsonii, metallica and macrorhiza 

 variegata. 



Ananassa, variegata. 



Anthurium, veitchii, waroqueanum and chrystallinum, costus 

 igneus, 



Aralia, veitchii gracillima. 



Camphylobotoys, variegatus. 



Crotons, chelsonii, johannis, superbue, Prince of Wales, Mrs. 

 Dorman, Queen Victoria, andreanum, rothchild, charmel. 



Curmera, wallisu. 



Cyanophyllum, magnificum. 



Dichorisandra, musaica. 



Dieffenbachia, bauser, baraquiniana magnificum and memore. 



Dracaenas, amabili, Chas. Dissel, hybrida, rothiana, schultzie, 

 godseflflana goldieana, doucetti, lindeni, sanderiana, robinsoniana, 

 salmoneana. 



Heliconica, aurea striata and rubricaulis. 



Maranta, makoyana, virginalis, wallisii and lindeni rosea lineata, 

 exeimia and fasciata. 



Panase, victoria and balfourii. 



Pandanus, veitchii and baptistii. 



Phyllanthue, rosea pictus. 



Phyllot, aenium, lindeni. , 



Sanchezia, noblis variegata. 



Phrynium, variegatum. 



Eranthemum, pulchellum. 



THE RELATION OF PURE SCIENCE TO HORTICULTURE. 



By DR. IDA A. KELLER, Professor of Blnloov of Pennsylvania HorticulUtral Society. 



A gardener may graft successfully without any scientific knowl- 

 edge of the cambium zone, nor is it necessary that he should have 

 studied the details of the process involved. All that he needs is 

 the knife and the experience of previous graftings. A grower of 

 flowers may produce the most remarkable hybrids without being 



