FOKESTRY. 943 



last year. (>ii<' of iln' priinip.-il nMlurcs of llw work w.-is iho oxi)loration of tlio 

 forest of the Soiitli Aiidaumiis. aiid the coiniiletioii of a workiiij; i)lan for these 

 areas by F. H. Todd. 



The reforestation in the department of Aube, France, L. Pardk {Rev. Eaax 

 ct Forcis, .'id (J!)07). .\ o. 7. ii/i. Uhi-.nn ) . — TLe author here presents notes sub- 

 mitted by yi. Mena, t-ouservator of forests and streams at Troyes, on private 

 reforestations which liave Iteen carried out in the department of Aube during 

 the hist half century. 



The de])artiiK'iit is dlNldcd iiild ("• rcLcioiis accordin.LT to llic nature of tlu> soil. 

 and (l(>scripti()iis are f^ivcn of tlu> work of reforestation in each of these resions. 



Native trees of the Transvaal, J. P.uktt-Davy {Truuf<vaal Agr. Jour.. .'> 

 ilixn). \<i. IS. jiji. 'i I .l-.'i.U ) . — Till' autlior has l)een engajjjed for some time in 

 the ])ublicatiou of an illustrative and descriptive account of Transvaal trees. 

 The present work is a preliiuinary classified cataloKUO of the species, with notes 

 as to their distribution. 



The native trees of th(> Transvaal ai-e said to occur in w(^ll-marked phyto- 

 geographie zones of vegetation. These zones are iiulicated and alphal)etical 

 lists are given of the species occurring in each, together with a list of families 

 arranged alphabetically under their main divisions and classes. The total 

 numi)er of trees classified consists of T)? families, which are subdivided into 132 

 genera and 2<W) species. 



Soap trees, K. (jJuenthek {DnUji (UiiisKhir <nid Trade Njiti^. [['. H.], 1901, Xo. 

 28')2. p. .'/). — In a lirief note reference is made to a large plantation of soap 

 trees at L'Arl)a. ni>ar Algiers, from which several thousand tons of berries are 

 said to be gathered annually. The tree is described as resembling an apple 

 tree of medium growth. The fresh fruit is green and its pulp surrounds a 

 kernel containing a yellowisli, gelatinous, sticky substance which is said to con- 

 tain three times as nuich soaii ;is tlie "i)anama" wood. This soap is expected 

 to be of great service to the cloth and linen manufacturers, as well as for 

 domestic jiurposes, since it can be used to clean linen and silken fabrics and 

 colored embroideries without causing the colors to run together. 



Caoutchouc, E. Levasseur {Rev. Eeoii. I)iteniat., 1 (1907), No. 3, pp. 601- 

 (hiJf). — 'Phis is a discussion of the development of the rubber industry in various 

 tropical countries of America, Asia, and Africa, including a description of the 

 methods of exploitation, species grown, statistics for a ])eriod of several years 

 as to the exportation of I'ubber from the principal rubber-producing countries, 

 the importations to tlie ])rin('ipal rubber-consuming countries, and the value of 

 different grades of rui)lier. 



On the occurrence of calcium oxalate in the barks of the eucalypts, II. G. 

 Smith (./oh/-, (tiid Pioc. Roy. Hoe. N. .S'. Wales, 39 {1905), pp. 23-32).— The 

 barks of the Mallees, or dwarf species of eucalyptus of New South Wales, were 

 examined to derive information with regard to their tanning value, as well as 

 to make clear some of the problems connected, with these dwarf species, which 

 occur in large quautities in many parts of Australia. 



From all the different species examined, calcium oxalate crystals were sepa- 

 rated in varying quantities, ranging from IG.GO per cent in Eucalyptus gracilis 

 to 0.08 per cent in E. inorrisi. The general appearance and thickuess of sev- 

 eral barks tested are described. The species which contain crystals in the great- 

 est abundance seem to be those which have a very thin, smooth bark, or at most 

 a but slightly persistent bark at tlie Iiase. It has already been determined that 

 in those barks which contain inuih calcinni oxalate the tannin is decidedly 

 superior to that found in siu-cii's in which the crystals are present only in small 

 amounts. 



