510 



by a tiirbau squash has developed uutil half grown, and has then per- 

 sisted until the end of the season, but it was seedless. All our experi- 

 ments show that Gaciirbita pepo and C. maxima do not hybridize." 



(3) Impotency of individual •pollinations. — " In pumpkins and squashes 

 the flowers are either wholly staniinate or whollj" pistillate, and they can 

 not, therefore, i)ollinate themselves. But the two kinds of flowers are 

 borne upon the same plant. Pollination between two flowers upon the 

 same plant I have termed individual pollination, in distinction from close 

 pollination, or pollination of tbe flower by itself, and from cross-pollina- 

 tion, or pollination between flowers on different i)lauts." 



Experiments are cited from which it appears " that in squashes and 

 l)um[)kins the pollen is impotent upon pistils on the same plant, and 

 that true inbreeding does not occur in them. The experiment will be 

 extended to all varieties." 



(4) Do cucumbers spoil mush-melbns f — The experimeuts thus far made 

 indicate that melons and cucumbers do not cross. 



(5) Progressioji of flowers. — A tabulated record is given of the num- 

 ber and time of appearance of the staminate and pistillate flowers as 

 observed daily from July 29 to September 29, 1890, on two musk-melons, 

 one water-melon, and one cucumber plant. The totals were as follows: 



Staminate flowers 

 Pistillate flowers . 



Miisk-melous. 



No.l. No. 2, 



670 



28 



316 



53 



Water- 

 melons 



211 

 23 



Cucur- 

 bits. 



.807 

 51 



Tlio figures are full of siguificauce. Tliey show that the stamiuate, or male flowers 

 are more numerous iu each case thau the pistilhite or fertile flowers, raugiug from 

 six to tweuty-four tiiues as many. They show that the i)istillate flowers make their 

 appearance later in the season — from 5 days iu the cucumber to 30 days in one of the 

 niusk-melons. They also show that, as a rule, the staminate flowers continue to ap- 

 pear later iu the fall thau the pistillate. Musk-melon No. 1 was a weaker plant than 

 the others, and it began to fail by the middle of Sexiteuiber. It is, therefore, instruc- 

 tive to observe that iu thisplaut the proportion of j)istillate flowers was the smallest, 

 and that they appeared later and Ceased earlier than the other plants. And the 

 figures illustrate the common observation that the cucumber is more precocious than 

 the melons. The figures show forcibly the 'necessity of starting melons early iu our 

 short seasons. 



North Carolina Station, Bulletin No. 73^ (Meteorological Bulletins Nos. 13 

 and 14), December, 1890 (pp. 36). 



Meteorological summary for J^orth Carolina, H. 13. Bat- 

 tle, Pii. D., AND C. F. Von Herrmann (pp. 3-31). — Notes on the 

 weather and tabulated summaries of meteorological observations by the 

 North Carolina weather service, co-operating with the United States 

 Signal Service, for October and I^oveinber, 1890. The bulletins are 

 illustrated with maps of North Carolina showing the isothermal lines 

 and the total precipitation for diliereut parts of the State. 



