360 EXPERIMENT STATION RECORD. 



(Convolvulus arvensis), and sheep sorrel; (2) those from creeping- stems: 

 Poison ivy (Rhus toxicodendron), wild rose [Rosa arkansana), elder, 

 golden -rods (Solidago serotina and 8. canadensis), sunflowers (Helianthus 

 grosseserratus and //. maximiliani), wild artichoke (//. tuberosum), white 

 morning-glory (Convolvulus sepium), smartweed (Polygonum muhlen- 

 bergii), nettle (Urtica gracilis) ,and nut grass (Cyperus esculentus); and 

 (3) those which form crowns: Yellowwood sorrel (Oxalis cornieulata), 

 redroot (Ceanoihus ovatus), wild senna (Cassia marilandica), ironweed 

 (Vernonia baldwinii), golden-rod (Solidago rigida), ox-eye daisy, dan- 

 delion, white vervain (Verbena urticwfolia), blue vervain ( V. stricta), 

 catnip, motherwort, plantain (Plantago rugellii), rib grass, wild four- 

 o'clock (Oxybaphus nyctagineus), pokeweed, patience dock, pale dock 

 (Rumex altissimus), curled dock, Paspalum setaceum, drop-seed grass 

 (Sporobolus cryptandrus), and Eragrostis pectinacea spectabilis. 



In addition, some modification of these methods of propagation is 

 shown in the case of the horse nettle, ground cherry, wild artichoke, 

 nut grass, dandelion, and rib grass. Methods for the destruction of 

 perennial weeds are discussed at some length, based on the necessity 

 of the development by the plant of some green leaves for the produc- 

 tion of underground parts. The authors investigated the ability of 

 root cuttings to produce adventitious roots in the case of ground cher- 

 ries, milkweeds, pasture thistles, bindweeds, climbing milkweeds, dan- 

 delion, rib grass, and Jerusalem artichokes. 



The underground parts of the various weeds previously mentioned 

 are figured and described in considerable detail. 



Notes gleaned by an experience in managing a weed garden, 

 W. J. Beal (Proe. Soc. Prom. Agr. ScL, 1897, pp. 35-52).— The author 

 gives a report of observations made on a weed garden which has been 

 in existence for about 10 years at the Michigan Agricultural College. 

 The soil of the different plats has been given no cultivation and has 

 become very compact. As would be expected whenever plants were at 

 all crowded, those along the margin of the plats were much more vigor- 

 ous than those in the middle. The perennial and biennial plants have 

 remained iu their respective plats, while the annuals have usually 

 seeded themselves and have also found their way to adjacent plats. 

 The growth of quite a number of species is described in considerable 

 detail. Many of the species have decreased in vigor. 



A list is given of 127 species of weeds which may be expected in cen- 

 tral Michigan, the arrangement being alphabetical under the scientific 

 names. An outline or syllabus is also given for a short course in the 

 study of weeds and a bibliography of over 100 references to weeds and 

 weed eradication. 



On the destruction of cuscuta, E. Noffray (Agr. Bationnelle, 1898, No. 12). 



QUnanthe crocata: A study of its botany and its pathogenic effect on men 

 and certain animals, C. Dejioor (CEnanthe crocata. Etude botanique et etude des effets 

 pathogenetiques observe* cite: Vhomme sain et certains animaux. Brussels: H. Lamertin, 



1898, No. 83) , 



