without fresh Supplies of Water and Air. 



487 



80°. No fresh water was given during the whole period; nor 

 was the door of the case opened, but to remove a dead leaf or 

 plant that had damped off. Once only was the cover taken off, 

 in order to check the Lycopodiutn stoloniferum, which had grown 

 so luxuriantly, as to shade and injure the other plants. 



3. List of Plants growing in the Case. 



Most of the following were planted in May, 1838, and none 

 less than nine months ago. The remarks are by Mr. M'Nab, 

 and apply to the time of examination in May, 1839. 



Botanical Names. Continent. Country. 



Chamfe'rops h&milis Europe Italy, Sicily, Spain 



Gentidna verna Europe England 



y4diantum Capillus Veneris Europe England 



Primula farindsa Europe Scotland 



scotica Europe Scotland 



Ferbascum Myc&nj Europe Scotland 



^4ndr6sace villbsa Europe Scotland 



Chama^rops Palmetto N. America Carolina 



Dionaj'a Muscipula N. America Carolina 



Sarracema purpurea N. America Carolina 



Epiga^a repens N. America Carolina 



Testudinaria elephantipes Africa Cape of Good Hope 



A'\oe retusa Africa Cape of Good Hope 



iJhododendron chrysanthum Asia Siberia 



Chamascistus Europe Austria 



Cycas revoluta Asia China 



.Nepenthes distillatbria Asia Ceylon 



Cypripedium venustum Asia Nepal 



insfgne Asia Nepal 



Agave geminiflora S. America Mexico 



*Go6dyer« discolor S. America Mexico 



*Echinocactus multiplex S. America Mexico 



♦peruviana S. America Mexico 



myriacantha S. America Mexico 



*formbsa S. America Mexico 



O'ttonj S. America Mexico 



Candida S. America Mexico 



Epiphyllum truncatum S. America Brazil 



Cereus flagelliformis S. America Peru 



Lycopbdium stoloniferum S. America Cuba 



Remarks. 



Increased a its original size. 

 Flowered, but no difference in size. 

 Increased |. 

 Flowered ; atmosphere rather damp 



for it. 

 Flowered ; atmosphere rather damp 



for it. 

 Increased |. 



Flowered ; not very healthy. 

 Increased §. 

 Made a. 



Increased 4 times its original size. 

 Increased A, 



Made a shoot 10 in. long. 

 Made J, showing flower spikes. 

 Increased a. 

 Increased 3. 

 Increased |. 

 Increased § . 

 Increased £. 

 Increased i. 

 Increased §. 



No perceptible difference. 

 Increased A. 

 Increased §. 

 Increased J. 

 Increased |. 

 Increased 4. 

 Increased A. 

 Increased f. 

 Increased a. 

 Very luxuriant. 



Those marked thus * are growing in fancy pots, and suspended from the roof of the plant case. 



4. Incident which suggested the Invention of the Case; with 

 Remarks on the Mode in which a smoky Atmosphere proves 

 injurious to Vegetation. 



Having thus described the apparatus in which the plants were 

 confined, the soil in which they have been grown, and the pro- 

 gress they have made under the peculiar conditions in which 

 they have been subjected to the combined action of the several 

 agents concerned in promoting vegetation, it is proposed next to 

 consider how plants naturally inhabiting such different climes, 

 and possessing such different characters, should be able, not only 

 thus to live together, but to flourish in circumstances foreign, in 

 many respects, to the native habits of all. Perhaps the best 

 mode of dealing with this question will be, to compare briefly the 

 conditions to which they are submitted in these close cases, with 

 those to which they are naturally exposed in the free atmo- 

 sphere. 



kk 4 



