[215 and 216]

Glaucium F. 124 (same scale no lettering)

Glaucium luteum: circumnutation of young leaf, traced on; illuminated from above under double skylight; traced on vertical glass, from 6 ° 40 9°30' a.m. July 2d 6th (to p (Temp. of 7 1/2 C.) June 14th to 8°30' a.m. 16th

Tracing not greatly magnified, apex of leaf standing 5 1/2 inches from the glass.)

[216]

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ChapterE 10

flowers except from the outside through holes bitten by humble-bees, or deep down between the flowers, as if in search of some secretion from the calyx, almost in as in the case same manner as described by Mr. Farrer, in the case of Coronilla (Nature 1874. July 2. p. 169). I must however except one occasion when an adjoining field of sainfoin (Hedysarum onobrychis) had just been cut down, and when the bees seemed driven to desperation. On this occasion most of the flowers of the clover were somewhat withered, and contained an extraordinary quantity of nectar, which the bees were able to sucking. An experienced apiarian, Mr. Miner, says that in the United States hive-bees never suck the red clover; and Mr. R. Colgate informs me that he has observed the same fact in New Zealand after the introduction there of the hive-bee into that island. On the other hand, H. Müller (Befruchtung p. 224) has often seen hive-bees visiting this plant in Germany, for the sake both of pollen and nectar, which latter they