Aui.AX Papavkuis Pkiîkis 143 



made by tlie -wonndinj;. It may Ix' tliat the <'.ii<is liad d('\('l()|K'd to 

 a certain extent and liad caused a bejiinninm' of the toniiation ot 

 « ji'all-])lastem », but we could not (bscover anytliiii,u ahout tliis. In 

 this ease one mi<;lit well thiidc that the rude treatment had destroy- 

 ed the activity of the e,ü-,i>s. Ibit in tlie folloAvinji' ease this is not so; 

 the ejiii's here bein,u' laid on the leaves , it is easy to take a ]»ieee 

 of such a leaf and to ]>laee it on a ]»laut whate\'er, without t<»uehin,u 

 the eji'^-. 



We mean the e<i\<is of Lip((r(i iiiccns we took last year fi'om 

 P h r a ^- m i t e s co m m unis aiid ]>ut <»u Cala m a iX i' o s t i s 

 1 a n e e o 1 a t a and on T r i t i c u m r e p e n s. Of ^all-forum- 

 tion we obtained no trace. ( 'ertainly this nniubei' of ne.liati^'e results 

 <;i\(s reason to think about this (juestiou. The possil)ility of (nie ,uall- 

 inseet, collected from one sort of jdant, forminj»' ,nalls ou sevei'al i)lants, 

 of course is not excluded at all , as the number of the cases that 

 have been ex;:mined, is so \-<'rv small. We are sure that by lucie or 

 accurate investii:ation, there will ))e found a forui, suiting- to these 

 ex])eriments. As everyone must see , this would be of j^reat impor- 

 tance, from a tlieoretical point of view. Still it seeuis that kiuds of 

 Rhodite.s may infect more than one sort of 1* o s a, so that here we 

 find a form, whose instinct is not (piite limited to one sort of Kosa. 



In the article nhoiit Xematus caprcae I>kyekinck (1) says, he was 

 able to cultivate Uhodites on K o s a c a n ina, r u 1) i ^ i n o s a 

 and r u ^' o s a and (»n this last sort we found them to grow in 

 ;;reat number in a garden in Bussuui. Also B. found galls of ////. 

 cglantcritic on K. c a n i n a. r u bigi n o s a and ]> i ui ]> i n e ^- 

 1 i f ol i a. and though it is not ]>roved that they are not dilferent 

 sorts, still it is apparently in analogy with Bh. rosile. 



In the article on If i e r a e i u m, Beyerixck (1*) also ventures a 

 supposition, that not all kinds of galls should be formed by one sort 

 of Aidax. 



In the treatise of Appel (3) , which , much to our regret we 



(1) Beykkixck — 1. c. Seite 9. 



(2) Beykkixck — Cyuipi<len Gallen, srite 4S. 



(3) O.AerEL — Ueber Phyto — und ZoöniniiiUo^eii. Sclnifte der Pliys. — OecDii. 

 Ges. in Königsberg in Pr. ,lhrg. XXXIX 1«9.S p. 1U2. 



