64 Experiment Station Bulletin 345 



Evidence is presented to substantiate many of the statements of 

 others as given in the review of literature, and are given in direct state- 

 ment form. 



1. Warming the floor of the poultry pen helps to maintain dry 

 litter. 



2. Controlled ventilation alone does not maintain dry litter in an 

 insulated or uninsulated house with sliding front curtains. 



3. Uninsulated houses are damper than insulated houses with the 

 same type of litter used. 



4. New Hampshires may be expected to consume approximately 

 22^4 gallons of water per bird per year. 



5. No specific standard of proper litter conditions can yet be set up. 



6. The moisture content of "desirable" poultry pen litters should 

 not exceed 40 per cent. 



7. A certain litter treatment called method "C" will assist materially 

 in maintaining good outward appearance of pen litter but is not very 

 helpful in reducing average litter moisture content. 



8. The type of litter used appears to have a greater influence on 

 litter moisture values than insulation, ventilation, *or area of floor space 

 per bird. 



9. Under our experimental conditions there were no measurable 

 differences in the health, condition, or production of birds on "wet" or 

 "drv" litter. It is conceivable, however, that in the presence of certain 

 diseases or epidemics wet litter may seriously interfere with their control. 



10. Prevention of spillage of water by the birds about the waterer 

 is desirable. (T. B. Charles, A. E. Tepper, W. T. Ackerman, B. J. 

 French, R. C. Durgin, R. B. Halpin) 



MISCELLANEOUS 



House Plants 



The project was started in August 1940. To date rather complete 

 information has been obtained on eleven species of plants tried under 

 home and office conditions. Limited information has been obtained on 

 seven additional species. 



Twenty-five plants of each kind are placed in as many homes or 

 offices and left two months or longer. At the end of this period the 

 plants are taken up and their condition correlated with the treatment they 

 have received. This treatment is determined by means of questionnaires 

 filled out with the aid of persons cooperating. 



Breeding work is being carried on with several species of plants with 

 the aim of developing new and more interesting house plants. 



Material will be ready later this year for the first of a series of house 

 plant publications. (W. D. Holley) 



Experiments with Gerbera in the Greenhouse 



Four blocks of 30 plants each were set out in beds in a house kept 

 at 50°F. and another set at 60°F. In each house two blocks were left at 



