574 HISTORY OF PASADENA. 



GLACIAL TERRACE. 

 The following correspondence will briefly explain what local points and 

 features are comprehended under this general term, and why : 



Office Pasadena History Co., 



Pasadena, Cal., August 21, 1894. 

 Prof. A. J. McClatchie, Botanist Throop Polytechnic histitiite : 



Dear Sir — Answering your inquir)' as to local names of certain points 

 rich in native flora, I respectfully submit the following : That peculiar and 

 characteristic range of water-bearing bluffs from Raymond Hill eastward to 

 San Marino, I have, for geological reasons, designated as the "Glacial Ter- 

 race ' ' group of spring brooks and canyons. It comprises Raymond creek 

 and canyon, [formerly called in Spanish, Arroyo San Pasqual]; Los Robles 

 brook and canyon, bordering Mr. J. E. Jardine's place ; Oak Knoll brook 

 and canyon, which joins Los Robles brook at Willowdale and forms the 

 "Mill Spring Creek" of the Mission Fathers; Mill Creek and canyon, 

 which rises at the foot of Lake Avenue and runs directly down to Wilson 

 lake, but its waters were also led by a ditch into their old stone mill by the 

 Mission Fathers ; Wilson's canyon, which rises at the foot of Wilson 

 Avenue and runs down to B. D. Wilson's old original Lake Vineyard ranch 

 barns and house, now known as the Patton place — this being the one where 

 the Biology department of the Throop Polytechnic Institute has chiefly pro- 

 cured fresh frogs for dissection and microscopic study ; Mission canyon, (also 

 called "Wild Grape canyon") the longest and largest one of the series, 

 famed for the abundance and fine quality of its wild grapes ; and San 

 Marino canyon, bordering San Marino ranch, Hon. J. De Barth Shorb's ele- 

 gant residence grounds. vSeven distinct water-way canyons, besides some 

 unnamed tributary brooklets, all within a space of two miles ; and I suppose 

 the native flora of this entire series or group of spring streams is substan- 

 tially the same. Yours very truly, H. A. Reid. 



To Prof. McClatchie : The above having been submitted to me, If 

 will say, that from my knowledge of glacial phenomena, and my observa- 

 tions in the region referred to, I consider "Glacial Terrace " an appropriate 

 name to indicate the character of the geological formations found there, and 

 also a fitting and convenient local designation for that peculiar range of bluffs 

 taken as a whole. Respectfully, J. B. French. 



I should here explain further, that the Glacial Terrace really commences 

 at Columbia Hill, and extends eastward clear to the outwash of Eaton can- 

 yon, beyond Lamanda Park ; and the "West Basin gully" from the Col- 

 umbia street water-shed, and " Craig Avenue swale " on the eastern border 

 of Pasadena territory, are both outlets of our geological basin, yet are not 

 large enough to be rated as canyons — while the first named one does not 

 produce a spring brook, and the last named produces its brook or creek be- 

 yond our Pasadena territory. These are the reasons why they were not 

 named in the above document. Prof. McClatchie wished to know the his- 

 toric names and associations of these densely-verdured water-bearing can- 

 yons — for sometimes botanical specimens were found in one canyon which 

 did not occur in others. 



