Baber. — On the Growth of Transplanted Trees. 311 



worthy of notice, however, that the development of the concep- 

 tacle in this plant might easily he worked out. A single plant 

 furnishes receptacles with conceptacles at all stages of growth. 

 The oogonium originates as a papillose swelling on one of the 

 parietal cells of the conceptacle, is segmented off, and gradually 

 developes into the mature form. The hairs are developed long 

 before there is any sign of the oogonia, and the conceptacles 

 themselves commence as an invagination of the cortical tissue. 

 Fig. 8 shows a transverse section through a young conceptacle. 



Hab. Bare, only met with in fragments cast up upon the 

 shore ; probably deep sea. 

 22. Sargassum. I have no remarks to offer upon this genus. 



EXPLANATION OF PLATE X. 



Fig. 1. Transverse section through bladder-wall of Adenocystis lessonii, show- 

 ing reproductive organs, and hairs on the surface of the frond. 

 (X 140.) 



2. Section through conceptacle of Adenocystis lessonii ; a. and b., cells 



containing zoogonidia (? ) (X 140.) 



3. Transverse section through external tissues of stem of Macrocystis 



dubenii ; a., b., c, secretion canals (X 200.) 



4. Transverse section through fertile portion of the frond of the same. 



(X 250.) 



5. Branched hairs of D'Urvillea, bearing oogonia. (X 140.) 



6. Section through portion of conceptacle of Notheia anomala. 



7. Section through portion of conceptacle of Splachnidium rugosum. 



8. Section of conceptacle of Marginaria urvilleana, showing young 



conceptacles. (X 45.) 



Art. L. — On the Growth of Transplanted Trees. 

 By J. Baber, C.E. 

 [Read before the Auckland Institute, 29th June, 1885.] 

 In Vol. V. of " Proceedings of New Zealand Institute," fol. 451, 

 will be found a table of the growth of Native trees during 20 

 years. A continuation of this record may probably be of use at 

 some future time to those engaged in forestry. 



The table (1885) attached refers to the same native trees 

 which were the subject of the table of 1872, leaving out those 

 which were merely ornamental. Measurements have been con- 

 fined to puriri, pohutukawa, titoki, tanekaha, and warengapiro. 

 The sizes of some other trees are added, with their age and the 

 name of planter ; many interesting trees at Bird Grove, Epsom, 

 and in St. George's Bay, in plantations made in the early times, 

 have been omitted, as evidence of date cannot be obtained. 



As regards kauri, it is to be regretted that the information is 

 scanty, occasioned by the paucity of transplanted trees. Success 

 in raising and planting kauri is difficult. 



