October, 1910.] 3: 



A iourney through guayule land. 

 Ind. World. Mar. '07, p. 173. 



The future of guayule. Trop. Life, 

 Nov. '08, p. 164. 



Guayule rubber. Jl. of Ind. & Engr. 

 Chemistry, Apr. '09, p. " T.A." 

 Aug., p. 108. 



The guayule rubber industry, Agr. 

 Jl. B. E. Africa II, 801. 



Guayule rubber. Kew Bull. '10. 

 p. 211. 



Propagation of guayule by seed. 

 Am. Rev. Trop. Agr. I. p. 77. 



Sapium :— 



Pruning of Sapium. Trin. Bull. Oct. 

 1908, p. 33. 



Pittier, The Mexican and Central 

 American species of Sapiums. 

 Coutr. U.S. Nat Hbm. XII. 4, 1908. 



Sundry Genera ;— 



Ecanda rubber (Raphionacme utilis). 

 Staff Kew Bull. 1908, p. 209. 



Jumelle. Le Plecfcaneia elastica et. . . . 

 dans le sud-ouest de Madagascar. 

 Le Caout. et la gutta. 15, 6, l908. 



Un caoutchouc de tubercules dans 

 l'Afrique portugaise ( Ecanda ) 

 Journ. d'Agri trop. July 1908, p. 

 200. 



Raphionacme utilis. Curtis, Bot. 



Mag. t. 8221. 

 A new important dwarf rubber 



(Ecanda). Qns, Ag. Jl. Oct. 1908, p. 



190. 



Donnees nouvelles sur le Bleekrodea 

 tonkinensis. Bull. Ec. Indoch. 1908. 

 p. 259. 



Entdeckung eines neuen Kautschuk- 



baumes in Mexico (Palo Colorado). 



Tropenfl Dec. 1908, p. 592. 

 L'arbre a caoutchouc de Tonkin 



(Bleekrodea) Bull. Jard, Col. Jan. 



1910, p. 4. et seq. 

 Palo amarillo. Kew Bull. 1909, " T. 



A." Feb. 1910, p. 105. 

 The new Dyera rubber. Ind. World. 



2, 1910, p. 162. 



Euphorbia tirucalli, eine wertvolle 



Kautschukpfianze. Tropenpfl. Mar. 



1910, p. 159, 

 Angola rubber (Carpodinus). Kew 



Bull. 1910, p. 91. 

 Experiences de rendement sur l'arbre 



a caoutchouc de Tonkin. Bull. Ec. 



Indoch. 1910, p. 1. 

 L'arbre a caoutchouc du Tonkin do. 



p. 168. 

 13 



Miscellaneous, 

 SOME PHENOMENA OP PLANT LIFE. 



By Francis Wayland Glen. 



(From the Louisiana Planter and Sugar 

 Manufacturer, Vol. XLI, No. 26, 

 December, 1908.) 

 Some men are lazy. In fact most men 

 work because they must work to eat- 

 Are plants lazy? From my standpoint 

 of observation for sixty years, they are. 

 They will seek the nearest food, regard- 

 less of consequences. In my garden, 

 a few years ago, I had an annual six or 

 more feet high. One morning from my 

 bed-room window I observed that a 

 northeast wind in the night had blown 

 it over flat upon the ground. There 

 were no projecting root3 producing from 

 the northeast side of the plant. All of 

 the roots upon that side were curved 

 around upon both sides ol the plant to- 

 wards the southwest. That was the 

 reason the northeast wind blew it over. 

 With a spading fork I lifted the earth 

 upon the southwest side of the plant 

 and discovered a fork full of decayed 

 stable manure. The roots upon the 

 northeast side curved to the southwest 

 because it was the shortest route to a 

 food supply. That was manlike. The 

 fact that it meant death to the plant 

 when the fall winds came was not con- 

 sidered. 



This is only one of very many instances 

 where the action of plants clearly indi- 

 cate indolence. Plants will go a long 

 way for food if they must to prevent 

 death. My father-in-law, the late Mr. 

 Joseph Wall of Rochester, had a cold 

 vinery. Thirty feet from the west side 

 was a row of hot beds for early vege- 

 tables. In the fall of the year the hot- 

 bed manure was spread upon the lawn. 

 I found that the roots of the vines in 

 the house had grown out to the hot beds 

 and where they entered the pile of 

 manure they were white and almost 

 translucent and as large as the stem of 

 a clay pipe. The enlargement extended 

 from 8 to 15 inches and then the roots 

 were dark and often less than one-fourth 

 the size of the white part. They remin- 

 ded me of the veins of a man who drank 

 strong stimulants to excess. Does the 

 excessive use of stimulants have the 

 same effect upon plants as it has upon 

 men ? I believe so. 



When I was a member of the firm of 

 Henry Edward Hooker & Co., of the 

 commercial nursery of Rochester, I sold 

 a farmer five hundred Northern Spy 

 apple trees. They were taken from a 

 block of some 5,000 three-years old from 

 the graft, They were six feet high, in 

 fact, were a prime lot. As soon as dug 



