﻿1903] CURRENT LITERATURE 63 



Frederic E. Clements has published" a paper entitled ** Greek and 

 Latin in biological nomenclature." Its purpose may be expressed in the 

 following quotation : ** The following treatise is intended to serve as a com- 

 pendium of the principles of word-formation In Greek and Latin of sufficient 

 thoroughness to enable the biologist to construct in proper manner any deriv- 

 ative desired. Further than this, various unfortunate usages which have 

 obtained in nomenclature and the many types of malformations will be con- 

 sidered in detail, and suggestions will be made for their correction or elimina- 

 tion."— J. M. C. 



Ferraris ^^ has undertaken a morphological study of the Iridaceae, his 

 first paper dealing with Romulea. The archesporial cell gives rise to a 

 row of three megaspores, the innermost of which functions. The synergids 

 show a prominent development of the filiform apparatus. The three 

 antipodals become very large and send out beaks into the projection of 

 chalazal tissue that extends into the antipodal extremity of the sac. The sac 

 finally completely replaces the nucellus, the extremity being freely exposed 

 in the micropyle. The remaining phenomena recorded are those common 

 among monocotyledons.— J. M. C. 



In his study of the parasitism of Buckleya Quadriala, Kusano^^ reaches 

 the following conclusions : The haustorium is provided with a cambium 

 ring between its cortical and axial parts which joins that of both the host 

 and the mother-root ; the form and structure of the haustorium change with 

 ^ge ; it possesses medullary rays, but the existence of sieve tubes could not 

 be determined definitely; the sucker, easily distinguishable in the younger 

 stage, loses its distinctiveness from the part behind after a certain amount 

 of growth ; as long as the host root is alive the haustorium may be active 

 and can maintain its life during many years. — J. M, C. 



A PAPER by Neubert'-^ on the nutations of the cotyledon of Allium comes 

 to these conclusions ; (r) the formation of the characteristic knee is automatic, 

 though influenced by negative geotropism and the consistency of the earth ; 

 (2) the elimination of the curve is also chiefly automatic, but here too gravity 

 has some directive influence ; (3) the formation of the protuberance on the 

 knee is dependent on darkness and friction. Neubert seems not to know of 

 the existence of my work on the geotropism of these cotyledons/s nor of 



" University Studies, Univ. Nebr. 3 : 1-86. 1902. 



'^Ferraris, Teodoro, Ricerche embriologiche sulle Iridacee. I. Embriologia 

 del G. Romulea Maratti. Ann. R. Istit. Bot. Roma 9 : 221-241. fh, 6-7> 1902. 



'3KusANO, S,, Studies on the parisitism of Buckleya Quadriala B. et H., a san- 

 talaceous parasite, and on the structure of its haustorium. Jour, Coll. Sci. Imp. Univ. 

 Tokyo 17 : article 10, pp. 42. pL /. 1902. 



'^ Neubert, R.,Untersuchungen uber die Nutationskriimmungen des Keimblattes 

 von Allium. Jahrb. Wiss. Bot. 38: 119-145. 1902. 



'^CoPELAND, E. B., Positive geotropism in the hypocotyl or cotyledon. BoT. 

 Gaz. 31: 410-421. 1901. 



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