50 KXPF.T.TMF.NT STATION RECORD. 



Iboir liahitat nn<l the luitnn- oJ' tlic prddiut which they yioltl. The moro im- 

 Ijortaiit proiliK'ts art' I'eshi oil. coniinonly known as wood oil, daniars of Katavia, 

 and copnl. 



Bamboo as raw material, W. Uaitt (Vninr XUtKiufi. /Ji {lUOl], \<js. 11, 

 III). 'jO<i--'>OS : l.>. pji. .',.i!)-5-'il). — This paper, which oriuinally aippi-aicd in Paper 

 Milt, contains a jicncral discussion as to the prol)al)le iniporlaiue of i)anii)oo as 

 a source of wood pulj), toiii'thcr with notes on laboratory tests made l)y the au- 

 thor in the production of wood pulp and observations on the growth and be- 

 liavior of bamboo under various systems of cropping, with estimates on the 

 average weight of the material which might reasonaltly be expected aiuiually 

 from a given area under rational systems (jf culture. 



The results of Hie author's experiments in the production of wood pulp from 

 Jianihoo indicate that the use of 2 or 3-year old growths appears to be the most 

 economical and to differ very slightly in the results. It is concluded that crop- 

 ping every third year, when the stems are from 28 to 34 months old, will secure 

 an absolute permanence of growth. In making paper pulp the nodes must be 

 removed from the bamboo cane. Fifteen tons of canes per acre every third 

 year is given as the dejiendable crop to be realized from poor to moderate bam- 

 boo stands. According to data secui'ed from lalioratory tests it is estimated that 

 .^ tons of air-dry bamboo will produce at least 45 per cent or 45 cwt, of un- 

 bleached pulp. 



Rubber cultivation in the British Empire, II. Wkigiit (London, 1907, pp. 

 VII +100, pis. -'i). — A lecture on this subject delivered before the Society of 

 Arts. Introductory considerations deal with the importance of rubber cultiva- 

 tion and the development of the rubber market, including tabular statistics 

 showing the consumption and value of rubber from 1809 to 1000, the relative 

 importance of India rubber, Balata, and gutta-percha, and the capital invested 

 in rubber companies. 



The author di.scusses the various geographical and liotanical sources of 

 caoutchouc, briefly describes the important rubber-producing species and varie- 

 ties, and gives a general account of the development of wild and plantation rub- 

 ber, with special reference to rubber cultivation in the British Empire. The 

 differences between the laticiferous systems of different genera is discussed, 

 the methods of tapping, collecting, coagulating, and the manufacture of rubber 

 are described, and data are given on yields secured under various conditions. 

 Notes are also given on numerous slides shown at the lecture. 



Caoutchouc and gutta plants, H. Jumeli.e (Les Plantcs d Caoutchouc ct a 

 Gutto. Pahs, I'MlS, pp. Xll+5.'i2, figs. 51). — This work is designed to supersede 

 one published in 1898 on the caoutchouc and gutta plants in the French colonies. 

 The present volume has been revised and enlarged with a view of including 

 all the tropical countries where rubber is produced and preseftting the more 

 recent information collected on the subject of rubber culture. 



Part 1 deals with plants producing caoutchouc, which are discussed in a 

 general way relative to their history, the chemical and physical properties of 

 the rubber and latex, and methods of harvesting and coagulation, after which 

 the important caoutchouc-producing species and varieties are taken up, includ- 

 ing their geographic distribution, botany, exploitation, yield in latex and rubber, 

 cultivation, etc. Part 2 deals with plants producing gutta. 



India-rubber and its manufacture, H. L. Terry (London, 1907, pp. VIII+ 

 29Ji, figs. 18). — This volume is designed for the general reader and the tech- 

 nologist in other branches of industry, with a view to fuxniishing information 

 relative to the natural history and manufacture of rubber. A brief general 

 and historical account is given of the rul>ber industry, together with the l)otan- 

 ical origin of raw rubber, methods of tapping, coagulation, and priuciiml raw 



