MATERIAL FOR LABORATORY ILLUSTRAI^ION, vii 



Brought forward $14.60 



Lichen (Peltigera) section of thallus .40 



Liverwort (Marchantia) section of antheridia .75 



Liverwort (Marchantia) section of archegonia 75 



Liverwort (Marchantia) spores and elaters 40 



Moss (Mnium) section of antheridia . .75 



Moss (Mnium) section of archegonia 75 



Moss capsule showing teeth (peristome) and spores 50 



Fern (Polypodium) cross-section of stem 40 



Fern (Polypodium) longitudinal section of stem 40 



Fern (Pteris) cross-section of stem 40 



Fern (Pteris) longitudinal section of stem 40 



Fern sporangia and spores 40 



Fern germinating spores 50 



Fern prothallium with sexual organs 75 



Fern prothallium with attached embryo 75 



Horsetail (Equisetum) spores and elaters 40 



Quillwort (Isoetes) section of microsporangia 75 



Quillwort (Isoetes) section of macrosporangia 75 



Pine mature pollen 40 



Pine fruiting scale at time of pollination 40 



Pine prothallium with archegonia, and pollen tube in nucellus. . .75 



Trillium pollen 40 



Trillium section of anther 40 



Trillium section of pistil showing locules and ovules . co 



Lilium embryo-sac in section 75 



Dentaria section of pistil showing locules and ovules 50 



$27.50 

 or the entire set for $20.00. 



DUPLICATE MATERIAL FREE WITH SET. 



Pond scum (Spirogyra) in fruit. 

 Green felt (Vaucheria) in fruit. 

 Wheat rust two stages on wheat and a cluster cup to represent the stage 



on barberry. 

 Powdery mildew. 

 Liverwort (Conocephalus). 



Moss ( Poly trichum) male, female, and fruiting plant. 

 Fern (Polypodium) pressed plants, and sporangia in formalin. 

 Horsetail (Equisetum) sterile and fertile plants. 

 Quillwort (Isoetes) plants in formalin. 

 Pine mature male and young female cones in formalin. 



These prepared slides, and other material, for laboratory work, can 

 be obtained of the Ithaca Botanical Supply Co., Ithaca, N. Y. They 

 are especially adapted to illustrate LESSONS IN BOTANY, as well as the 

 author's larger ''Elementary Botany." 



A supplementary list of supplies representing additional topics treated 

 of in " Elementary Botany," can be had on application to the Ithaca 

 Botanical Supply Co. 



