HOW THE SEEDS WERE BURIED. 



9 



Table I. — L'n't of xeeds selected for Hie experiments — Continued. 



La bora 

 torv 

 test 

 num- 

 ber. 



16246 



16247 



16248 

 16249 



16250 



16251 

 16252 



16253 

 16254 



16255 

 16256 



16257 

 16258 

 16259 

 16260 

 16261 



16262 



16263 

 16264 

 16265 



16266 

 16267 

 16268 



16269 

 16270 

 16271 



16272 

 16273 

 16274 



16275 

 16276 

 16277 

 16278 

 16279 

 16280 

 16281 

 16282 

 16283 



162S4 



Kind of seed. 



Hypericacefe (St. John's wort family): 



Asci/niiii liiipei ic(jiiirs L. ( St. Andrew's cross) 



Onagrace* (eveninjf primrose family): 



Onagra bieimis ( L.) Scop, (common evening primrose) 



Apiaeea' (carrot family i: 



Apiiim grartokiii! L. ( celery ) 



PasUndca satira L. (parsnip, wild ) 



Oleaceffi (olive family): 



Fra.rinus americuiiu L. ( white ash) 



Convolvulacece (morning-glory family i: 



Convolruliis sipiiii}! L. ( hedge bindweed, great bindweed ) 



Ipomiiea Uicuiid.m L. (small-flowered white morning-glory) 



CuscutaceEe-(dodder family) : 



Ciisriitti polyooiioriim Engelm. (smartweed dodder) 



Ciisciitd epi/itiiiiii Wei he. (flax dodder) 



VerbenaeeEe (vervain family): 



]'irhnia liastala L. ( blue vervain) 



Vrrbina Krlici/olia L. (white vervain, nettle-leaved vervain' 



Solanaeete (pfita to family i: 



Oip.-'icum iniiiiiiuii L. ( red pepper) 



I>aliir(i tatiila L. (purple stramonium, jimson weed) 



LjIcopcrsicDit li/copersicon (L. ) Karst. (tomato) 



Airoliatia labacum L. (tobacco) 



!>olanum nigrum L. (black nightshade, garden nightshade) 



Scrophulariacefe (figwort family): 



Verbascum thapsiis L. ( great mullen ) 



Plantaginacefe (plantain family): 



Plantago lancailata L. ( ribwort, ribgra.ss, buckhorn ) 



PUintago majar L. (common plantain i 



Plnnlago riigdii Dec. (Rugel's plantain, broad plantain ) 



Cucurbitacese (gourd family): 



Citrulliis citrulhis (L. ) Karst. (watermelon) 



Cacumis nicio L. (muskmelon ) 



Cucumis salivug L. (cucumber i 



Cichoriacefe (chicory family): 



Lactui'a srariola L. (prickly lettuce) 



Lactuca satira L. (lettuce i 



Tara:eacu)n crgllirospcnnum Andrz. (red-seeded dandelion) 



Ambrosiacese (ragweed family): 



Ambrosia arlem(!<iarfolia L. ( ragweed) 



Ambrosia Irifida L. ( great ragweed ) 



Xanihiam pi nnsglvanicum Wallr. ( Pennsylvania clotbur, cocklebur). 

 Asteracea- (aster family): 



Arrtiiiin lappa L. (burdock, clotbur) 



P.iilrn^ frond ona L. (black beggar ticks) 



Curd II IIS arniisis ( L.) Roljs. (Canada thistle) 



Chriisiiidliiiniiiii It iirniitheiiniiri L. (whiteweed, oxeye daisy) 



Griiiddia si/iiarrosa (Pursli.) Dunal. ( broad-lea ve(i gum plant) 



Jleliiuithiis unninis L. (common sunflower, wild) 



lidiaiilhiis anniius L. (common sunflower, cultivated) 



Oiiopordoii aranl/iiiiiii L. ( cotton thistle, scotch thistle) 



Riidhirkin liirta L. ( black-eyed Susan) 



Piniice* ( fiine family) : 



J'iiiiis rirgiiiiana Mill, (scrub pine, Jersey pine) 



Sample 

 number. 



44 



8 



94 

 95 



105 



56 

 81 



63 



82 



66 

 79 



39 

 106 

 45 

 99 

 61 



76 



91 

 65 



6 

 26 

 48 



28 

 90 



87 

 53 

 51 



101 

 84 

 80 

 92 

 89 

 97 

 29 



109 

 57 



36 



Burial 

 number 

 as given 



on 

 diagram. 



95 



96 



57 

 56 



23 

 22 



98 

 97 



100 

 99 



59 

 61 

 60 

 101 

 58 



102 



105 

 103 

 104 



26 

 25 

 24 



107 



62 



106 



63 



28 



27 



112 



64 



111 



110 



108 



29 



7 



65 



109 



HOW THE SEEDS WERE BURIED. 



The foregoing- H.st repre.sent.s 109 species, 8-i genera, and 34 families 

 of plants. • Carefully counted seeds of these samples were mixed with 

 dry clay soil and packed in well-baked earthen pots (the common 

 flowerpot used in greenhou.ses). The tilled pots were covered with 

 inverted clay saucers in order to prevent the seeds from being 

 destroved or becoming mixed with other seeds which mioht have been 

 in the soil with ^vhich the pots were covered. By buiwing the seeds 

 mixed with earth in porous clav pots of this character they were sub- 

 jected to conditions almost identical with tho.-se which would exist if 

 the seeds were buried either accidentally or by natural causes. The 

 porous clay pots admitted of the free circulation of air and water. . 

 80350— yo. 8.8—05 2 



