592 



been long used for tanning purposes by the Indians, and also of late 

 years by the tanneries of those districts."' 



The roots from which the samples were taken were planted in 18S4. 

 They contained from 3S.o to 41.8 per cent of tannin in the dry matter. 

 Examination of diftV-rent parts of the root shows that '• the inside parts 

 of the root give more tannin than the outside. • ♦ • The smaller 

 roots contain less of the thick and heavy woody tissue, andmore of the 

 soft growing parts, and therefore give a large percentage of tannin.'' 

 The tests indicate that " the roots may be gathered at any time after 

 the plants have ceased Howering." 



PUESKUVATIVK FLl IDS FOR FRESH FRUITS AND THE SULPHURING 



OF DRIED FRUITS, E. W. HiLGARD, Ph. D. (pp. ll.'«-133).— A reprint 

 of Bulletin No. 8(1 of the station (see Ex]ieriment Station Kecord. vol. 

 II, p. OS). 



Fertilizers, E. W. Hilgard, Ph. D. (pp. I.i4-14.i).— This includes 

 papers on The Use of Fertilizers in California, reprinted from lUilletin 

 No. .S8 of the station (see ExperinnMit Station Kecord, vol. ii, \k -7L'); 

 and on The Fertilizing Value of (Irease Wood, reprinted from linlletin 

 No. 94 of the station (see Experiment Station n<'cord, vol. ill, p. 37.{); 

 and analyses of tish guano, dried hog tankage, fertilizers, suli)hur 

 refuse, and guano from Sophia Island. 



Kepoht on field ^voUK at the tentral statio.n, i:, J. Wkkson, 

 M. A. (pp. 147-149). — An outline account of the work performed dur- 

 ing 1S!>0. 



The botanic gakukn, K. I^. (Ik'EENE (pp. 149, 150). — Brief state- 

 ments regarding preliminary work in the establishment of a general 

 botiinic garden in additicMi t<> the nanlcii of r((»nomic ]»lants Itegun a 

 numl)er of years ago. 



It is ]ir<)pi>si(l lirst <>l" all t<> lonii a li\iiii; lulliriinn or >;iir«lfii of the native tn-i-s, 

 shrubs, aiul luTltati-ons plants of tin- Stat)- of California, ^atlu-rin); in at the sanu- 

 tinip, as rapiilly as our liinitfil farilitii-s will ]>('rniit. tliosi- of onr n«'i>:hborinK Statos 

 on tlio Patitir roast. No n-^ion of tin* worM has a more iiitvrrstinj; or varied native 

 veK«'tatiou than this coast, and scanely niori* than a lM>;;inninK has b«M'n nnule at the 

 sciontifii' study of it as a wiiole. Tin- moderate eliniate of Berkeley, exempt fr<Mn all 

 extremes of heat and eold an<l humiilily and drouth, is Just that whiih must jirove 

 adapted to the ;,'ro\viug of the greatest variety of plants in the ojieu air and without 

 irrigation. 



Olive culture am> oi.ive oil (pi». 150-177). — This i)ieludes not^js 

 on varieties of olives by W. G. Klee, reprint«'«l from Bulletin No. S5 ol 

 the station (see Exi>eriment Station Kecord, vol ii, i». 11), with brief 

 statements regarding seedling olives grown at the station, and. articles 

 bv Ti. Paparelli on the K'ipening. Picking. As.sju'ting. and Conservation 

 of Olives (read before the Fruit (Irowers' Convi'Utiou at Santa Cruz, 

 November 21, 1S90); Proper Fertilizers for Olive Trees (pulilished in 

 the California Fniif (irmnr, March 14, ISKli; Nides on California 

 Olives, their Adaptation and Oils, reprinted from Bulletin No. 9J of 



