No. 1, July, 1920 J PATHOLOGY I s "' 



121S. Pbtronibvics, B. La lol de revolution non correlative. [The law of non-correla- 

 tive evolution. | Rev. Gen. Sci. Puree ei Appliquees 30: _'lo 242. !'.)19 — Discussion of the 

 so-called law, hased on zoological and paleontologies! material. — 0. J. P< irce. 



1219. Walcott, C. D. Middle cambrlan algae. Smith. Misc. I loll. 67:217 280. PI. tf- 

 59. 1919. — A continuation of the author's extensive paleontologies! studies of the Harness 

 shale of British Columbia of Middle Cambrian age. All of the forms are preserved as thin 

 films in the shale and consequently (heir essential features are largely obscured. All are 

 considered to have been planktonic forms and all are described as new species. They con- 

 firm the view that the algae as a whole have undergone but slight change during the millions 

 of years of their history. Following are the forms described with their taxonomio position: 



Cyanophyceao Rhodophyceae 



Order Hormogoneae Waputikia ramosa 



Family Nostocaceae Dalyia nitens 



Morania confluens Dalyia racemata 



Morania costellifera Wahpia insolens 



Morania elongata Wahpia mimica 



Morania fragments Wahpia virgata 



Morania frondosa Bosworthia radians 



Morania (?) globosa Bosworthia gyges 

 Morania parasitica Calcareous Algae 



Morania (?) reticulata Sphaerocodium (?) praecursor 



Marpolia spissa Sphaerocodium (?) cambria 

 Marpolia aequalis — E. W. Berry. 



Chlorophyceae 



Yuknessia simpex 



1220. Woks dell, W. C. The origin and meaning of medullary (intraxylary) phloem in the 

 stems of dicotyledons. II. Compositae. Ann. Botany 33: 421-458. 1919.— See Bot. Absts. 4, 

 Entry 1006. 



PATHOLOGY 



G. H. Coons, Editor 

 C. W. Bennett, Assistant Editor 



1221. Amos, Arthur. The difficulties of growing red clover. Clover sickness and other 

 causes of failure. Jour. Roy. Agric. Soc. England 79: 68-S8. 5 fig. 1918.— See Bot. Absts. 

 4, Entry 1. 



1222. Anonymous. Wart disease of potatoes order, 1918, and inspection of immune crops. 

 Jour. Bd. Agric. Great Britain Suppl. 18: 114-115. 1919.— The planting of varieties of pota- 

 toes susceptible to the wart disease (Synchxjtrium endobioticum) in districts that have been 

 certified as "infected areas" is prohibited by an order of the Board of Agriculture in 1918. 

 To provide seed of immune varieties reasonably free from "rogues" for use in these infected 

 areas, arrangements were made by the Board for the growth under careful field inspection and 

 rogueing of nine immune varieties of potatoes in Scotland. Under this arrangement over 

 4000 acres of potatoes were inspected of which 3650 passed the standard prescribed for the issue 

 of a certificate. Where 'the crop was satisfactory a certificate was issued to the effect that 

 the potatoes were of the variety specified, true to type and reasonably free from "rogues." 

 The vendor of this inspected seed is obliged to quote the number of the certificate on the 

 invoice on all sales. The lack of an adequate supply of First Early varieties immune from wart 

 disease presents a serious difficulty now but it is anticipated that this difficulty will be entirely 

 overcome by 1921. — M. B. McKay. 



