4 BULLETIN 830, U. S. DEPARTMENT OF AGRICULTURE. 



determinations indicates the number of berries or cherries used. 

 Each berry was tested five times and the tests averaged. The pres- 

 sures required to puncture the epidermis of the fruit in each separate 

 lot were averaged, and the results are shown in the appropriate 

 columns. The temperatures at which they were tested and the treat- 

 ment given the fruits before testing are also shown in the table. 



Table I. — Pressure required to puncture certain fruits freshly picked and after 24 hours 

 under stated conditions, each determination representing the average of Jive punctures on 

 a single fruit. 



See. ^.—Strawberry Fruits, Using a Needle 638 Microns in Diameter. 





Tested soon after picking. 



Tested after 24 hours in ice box 





Warm. 



Cooled in ice 

 box. 



Washed in tap 

 water. 



Warmed to 

 room tempera- 

 ture. 



Cold. 



Variety. 



1 



•6 



CD 



o 



•6 



H 



1 



-S-S 



i3 



o 



CD 

 [-< 



'3 



i 



L, 



CD 



■si 



CD 



•6 



CD 



•3 



& 



CD 



CD 



^ 3 



d 



CD 



CD 



d 



CD 



•3 

 en 



1 

 u 



CD 



^3 



d 



CD 

 CD 



d 



CD 

 H 



•3 



cr 1 





U-- 



03 



cd 



u-£ 



03 



CD 





cS 



CD 





03 



CD 





ta 



t* 





J3 fl 



n 



| 





CD 



3 



** 



CD 



3 



% 3 



CD 



a 



CD r" 



CD 



a 





3 



a 



CD 



CD 



hi 



3 



a 



Li 



hi 



3 



a 





3 



a 



CD 



a 



3 



a 



CD 





A 



H 



Pn 



fc 



H 



Pn 



B 



e 



Ph 



fc 



H 



Ph 



fc 



EH 



Ph 







°C. 



Gms. 





° C. 



Gms. 





•c. 



Gms. 





■c. 



Gms. 





C. 



Gms. 



Cooney 



10 



w 



4.41 









9 



'6 



4.76 



10 



*>5 



3.64 



1° 



16 



6.34 



Do.... 



10 

 9 

 26 



7 

 7 

 5 

 5 



29 

 24 

 26 

 23 

 29 

 30 

 23 



4.79 

 3.87 

 4.11 

 5.06 

 4.83 

 4.95 

 5.28 



10 

 9 



18 

 5 

 7 

 6 

 3 



16 

 13 

 16 

 16 

 16 

 16 

 13 



5.57 

 5.39 

 6.05 

 6.50 

 7.79 

 6.79 

 7.07 



5 



29 



4.81 















Do 









8 



13 



5.18 



Do 

















Do 





















No. 29 5 















7 



16 



6 30 



















Do 









































Sec.B. — Black Raspberry Fruits, Using a Needle 121 Microns in Diameter. 



Undetermined. 



10 



25 



4.45 



8 



14 



6.23 









10 



27 



4.15 



10 



13 









Sec. C. — Red Raspberry Fruits, Using a Needle 313 Microns in Diameter. 



Ranere (St. Regis). 

 Undetermined 



12 

 9 



27 

 28 



4. 86 

 4.93 



15 

 10 



16 

 16 



6.41 

 6.66 







10 

 10 



28 



28 



3.88 

 3.51 



10 

 10 



13 

 13 







1 





5.65 

 4.90 



Sec. D. — Blackberry Fruits 



, Using 



a Needle 



60 Microns us 



Du 



L.METER. 







Erie 



15 

 15 

 14 

 14 

 16 

 15 

 10 



25 

 28 

 26 

 25 

 26 

 26 

 27 



5.60 

 5.45 

 6.52 

 5.59 

 6.00 

 7.92 

 7.94 



16 



15 

 15 

 15 

 14 

 15 

 10 



13 

 13 

 16 

 13 

 13 

 12 

 13 



6.36 

 6.50 

 8.47 

 6.83 

 8.11 

 9.06 

 8.98 



15 

 15 

 15 



26 

 28 

 26 



5.46 

 5. 53 

 6.30 



12 

 15 

 5 



27 



28 

 26 



5.62 

 5.69 

 7.36 



15 

 15 

 5 



13 



13 

 13 



7.16 

 6.35 





8.18 









15 



28 



6.24 















Do. . 























5 



26 



6.93 



5 



13 



9.59 













Sec. J?.— Cherry Fruits, 



Using a 



Needle 08 M 



CRONS IN 



Diameter. 











15 

 16 



27 

 29 



5.08 

 5.65 



15 

 16 



16 

 13 



6.46 

 6.88 





















do.. .?."/. ".::::::::::: 















10 



13 



7.10 



















