842 
MR. W. GARDINER ON THE CONTINUITY OF THE 
looking over this list for me and not only making several valuable alterations, but 
also adding the authority for each species. 
Arecinece. 
Areca triandra. Roxb. 
Areca Catechu. L. 
Stevensonia grandifolia. Duncan. 
Rhopalostylis sapida. W. and D. 
Howea Belmoreana. Ben. 
Kentia costata. Ben. 
Archontophcenix Cunuingbamii. W. and D. 
Euterpe oleracea. Mart. 
Euterpe ednlis. Mart. 
Hyopharbe Verschaffeltii. Wendl. 
Synechanthus fihrosus. W f<;ndl. 
Didymosperma distichum. H.f. 
Pinanga latisecta. Bl. 
Heterospathe elata. Scheff. 
Caryota urens. L. 
Manicaria saccifera. Gm rtn. 
Cyrtostachys Renda. Bl, 
Calyptrogyne Swartzii. H.f. 
Calyptrocalyx spicatus. Bl. 
Cbamgedorea tinella. Wendl. 
Prestcea pubigera. H.f. 
Ceroxylon andicola. H. and B. 
Oncosperma horridum. Seem. 
Lepidocaryece. 
Calamus calicarpus. Griff. 
Mauritia flexuosa. Linn f. 
Calamus fissus. Bl. 
Plectocomia Himalyana. Griff, 
Pirgafetta elata. Becc. 
Raphia Hookeri. M. and W. 
Borassece. 
Latania Loddigesii. Mart. 
Lodoicea Seckellarum. Mart. 
Geonoma vaga. Griseb and Wendl. 
Rentinckia Conda-panna, Berry. 
Coryphece. 
Thrinax, sp. 
Corypha elata. Roxb. 
Licuala Rumphii. Bl. 
Livistona Hoogendorpii, T. and B. 
Washingtonia filifeva. Wendl. 
Sabal umbraculifera. Mart. 
Rhapidophyllum Hystrix. W. and D 
Cocoinece. 
Cocos nucifera. L. 
Cocos flexuosa. Mart, 
Bactris, sp. 
Astrocaryum rostratum. H.f. 
Syagrus botryophora. Mart. 
Martinez'ia Aiphanes. Kl. 
Maximiliana caribcea. Gr. and W. 
Desmoncus, sp. 
Martinez'ia caryotifolia. H. and K. 
Guilelma speciosa. Mart. 
Diplothemium, sp. 
Phytelephasieee. 
Phytelepkas macrocarpa. R. and P. 
Phcenicece. 
Phoenix dactylifera. L. 
In all the above seeds a direct means of communication between the cells of the 
endosperm was observed. 
Confining myself at first to the Palrnte, I would point out that in their structure 
the various seeds present every possible modification both of thickness or thinness of 
the pit membrane, of clearness or difficulty of observation, of variations in the size of 
the cell, and in degree of development of the middle lamella. 
In making the subsequent observations with reference to the study of a number of 
instances of one and the same phenomenon, I propose to deal with the subject in a 
somewhat general manner and to illustrate my statements by such typical examples 
as will best serve my purpose. 
I. Development .—In no case have I worked out the development of any of the 
seeds that I have examined. On account of want of time and opportunity, it is, there- 
