218 MATERIAL, APPARATUS, AND SUPPLIES 



Peziza or other cup fungus. Paraffin sections of fruiting surface, safranin 

 and gentian violet. 



Puccinia. Paraffin sections (1) across sori of teleutospores and uredo- 

 spores ; (2) cluster cup on barberry, D.'s haematoxylin. 



Coprinus or other gill fungus. Paraffin sections of gills, cut rather thick, 

 showing basidia with spores, D.'s hsematoxylin. 



Marchantia. Paraffin sections (1) of thallus, safranin and D.'s haematox- 

 ylin (Sec. 185) ; (2) antheridial receptacles, D.'s hsematoxylin ; (3) arche- 

 gonial receptacles for archegonia and sporophytes, safranin and D.'s 

 heematoxylin. 



Porella. Paraffin lengthwise sections (1) of antheridial branches, D.'s 

 hsematoxylin ; (2) archegonial branches for sporophytes, safranin and D.'s 

 hsematoxylin. 



Antfwceros. Paraffin lengthwise sections of medium-sized sporophytes 

 attached to small pieces of the gametophytes, safranin and D.'s hsematoxylin. 



Funaria, Mnium, or Atrichum. Paraffin sections (1) of the tips of anther- 

 idial and archegonial plants ; (2) medium-sized spore cases for spore-bearing 

 tissue, D.'s hsematoxylin. 



Wehhera. Protonema, common in greenhouses, frequently forms buds 

 in great numbers, safranin, carried with care into balsam. 



Aspidium. Paraffin sections of sorus, D.'s hsematoxylin. 



Pteris aquilina. (1) Cross and lengthwise sections of rhizome (Sec. 194) 

 mounted on the same slide, safranin and D.'s hsematoxylin. 



Pteris or other fern. Paraffin lengthwise sections of (1) root tip; (2) large 

 prothallia to show archegonia and occasional developing sporophytes, safranin 

 and D.'s hsematoxylin. 



Pinus. (1) Cross sections of needle, safranin and D.'s hsematoxylin ; 

 (2) Sections of wood, cross, radial, and tangential, mounted on the same 

 slide, safranin and D.'s hsematoxylin, or methyl green and fuchsin (Sec. 

 186, B) ; (3) paraffin lengthwise sections of ovules from a; year-old cone, 

 safranin and gentian violet or safranin and D.'s hsematoxylin. 



Lilium or related types. (1) Paraffin cross and lengthwise sections of 

 anthers, showing pollen mother cells in stages of nuclear and cell division, 

 also sections of mature anthers ; (2) paraffin cross sections of ovule cases of 

 various ages to show the development and structure of the embryo sac and 

 ovule ; (3) double fertilization in embryo sac ; (4) development of embryo 

 and endosperm ; all stained with safranin and gentian violet, or safranin, 

 gentian violet, and orange G (Sec. 199, D). 



Sambucu^. Paraffin cross sections of mature anthers to show gameto- 

 phyte nuclei in the pollen grain, safranin and gentian violet. 



Capsella. (1) Paraffin lengthwise sections of tip of growing raceme to 

 show stages in the development of the flowers, D. 's hsematoxylin ; (2) paraffin 



