2i;i 51 



Alipciidix. ViirioiiK rccoiiinii'iKliitioiis. 



XXXII. Mot.anists slioiild use iii iniidoni langiiaftes latin scic^nlific niiiiu's or those inimetliatrly 

 ilcrivi'il l'niMi lliciii, profcrably to names nf aiiotlier kiiicl or origin. Tlioy slioiild avoid tlio iisn of 

 tlic latk'i- iiiilcss llieso aro vory clear and in common uko. 



XXXIII. Evury friend of science should oppose Ihc iiitrodiictinn iiilo ;i modern langnage 

 of nanies of )ilants whicli are not already lliore, unless tlicy are derived froiii latin Imlanical names 

 liy means of some sliglit altération. 



XXXIV. Tlie nietric System only is iised in liolaiiy for reckoning weiglits and nu^asnres. 

 'l'Iir foiil, incli. Une, poiMid, ounco etc. sliould be rigorously e.xdudod from scientific langnag(^ 



.Vltitnde, ileptli, ra])idity etc. are nieasnred in métros. Fatlioms, knots, miles etc. are 

 e.xpressions wliicli slimild disa]ipear from scientific langnage. 



XXXV. Very minntc dimensions aro rcckoned in /« (mic.romillimetn^s, microns, or llion- 

 sandtlis id' a millimètre) and not in fractions of a millimètre or line. etc.; fi'actions enc iiiidiercd »illi 

 ci|)liers and coiiimas are more likcly to givc riso to mistak(!s. 



XXXVI. .\ntliors are asked to indicate clearly und precisely tlie scalc- of tlic fignres 

 wliicli tliey pidilisli. 



XXXVII. 'l'empi'ratnres are e.xjiressed in degrei^s of tlie centigrade llicrmometei- of ('elsins 



