1909] BARBER-FRUITS AND SEEDS OF CUCVRBITACEAE 267 



tubes (or latex tubes) in the detection of pumpkin pulp as an adulter- 

 ant of preserves. They have an original cut, but their description of 

 these elements is taken from Fischer 5 and Braemer. 9 



T. F. Hanausek 12 gives one figure illustrating the characteristic 

 dements of the seed of Cucurbita Pepo L., C. maxima Duch., and C. 

 moschata Duch. These elements are the Skleriden (resembling the 

 pidermis of Spanish pepper), spongy parenchyma, starch grams of 

 the inner parenchyma, endosperm and cotyledon tissue with alcurone 

 grains. 



Arthur Meyer 13 refers briefly to the alcurone grains of Cucurbita 

 Pepo as having a diameter of 1-4 \i (mostly 3 /*) and small crystalloids. 

 In his table taken from Ludtke, 14 the seeds of Citrullus and Colocyn- 

 this are stated to contain numerous aleurone grains 1-7.5 P m diam- 

 eter, each having one globoid (0.5-1 /») and one crystalloid (1-3 p). 



Bohmer's gives a chemical analysis of the seeds of the Cucurbitae 

 and one figure showing a cross-section and surface view. His brief 

 histological description is taken from other authors. 



Collin and Perrot 16 describe briefly and give a cross-section of 

 the seed of Cucurbita Pepo Duch. 



According to Moeller 1 ? the fruits of Cucurbitaceae are all 

 'arge berries with hard shells, soft fruit-flesh, and many seeds. The 

 eed coat is divided into four tissues: (1) palisade cells with thicken- 

 ings on radial walls; (2) stone-cell layer; (3) stellate parenchyma; 

 a| ri (4) thin-walled parenchyma. A brief description follows of 

 Cucurbita Pepo L., C. maxima Duch., C. moschata Duch.. Cucumi 

 "to** L., C. Melo L., and Citrullus vulgaris Schrad., with cuts of the 

 last two. 



a » 



"Lehrbuch der technischen Mikroskopie 370. Stuttgart. 19M. Trans a ion, 

 in 'tox, The microscopy of technical products 369. New York. 1907- 

 '*Die Grundlagen und die Methoden fur die mikroskopische Untersuchung von 

 p fenzenpulvern 32 . Jena. 1901. h 



,4 Ueber die Beschaffenheit der Aleuronkorner einiger Samen. Ber. Deu . 

 Ih ^GeseU,x8 9I : 36-59. 



,j ;T)ie Kraftfuttermittel, ihre Rohstoffe, Herstellung, Zusammenset/.ung 

 J** und Yenvendung, mit besonderen Berucksichtigung der Yerfalschungen 

 er nukroskopischen Untersuchung 508. Berlin. 1903. 



Paris. 1904. 



Mikroskopie der Nahrungs- und Genussmittel 47°- 2 - Aut1 ' B " l "' ' 9 



