ILLUSTRATIONS. 



Page 

 FRONTISPIECE. 



1. Type of Single Violet . 21 



2. Type of Double Violet 23 



3. Characteristic Growth of California and Marie 



Louise Compared 24 



4. Mixing Soil. Spreading Manure in Layers Be- 



tween the Soil . 36 



5. Mixing Soil. Breaking and Pulverizing the Sod 



Preparatory to Putting it down with Layers of 

 Manure 37 



6. Sash House with Sash off. . 44 



7. House twelve feet wide, six feet to Ridge; side 



ventilators of glass 45 



8. Type of Even Span House, twelve feet wide, show- 



ing Method of Running Heating Pipes and 

 Constructing Beds 46 



9. Type of Even Span House, twelve feet wide, with 



two deep walks, showing Heating Pipes and 

 Method of Constructing Beds, Roofs, and Ends 48 



10. Shed at North End of Houses, showing Method of 



Construction 49 



u. Interior of Shed shown in fig. 10 50 



12. Roofs of Twelve Foot Houses, showing Method of 



Construction and of Attaching Ventilators . . 51 



13. A Twelve Foot House, showing Method of Con- 



structing and Attaching Side Ventilators ... 54 



14. Fastening Pipes to Posts by Tin Clips 57 



15. Fastening Pipes to Posts by Bent Wire Nails . . . 5 



