"upon the by" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "upon the by",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "upon the by",
      "name": "en-prep phrase"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1627 (indicated as 1626), Francis [Bacon], “(please specify the page, or |century=I to X)”, in Sylua Syluarum: Or A Naturall Historie. In Ten Centuries. […], London: […] William Rawley […]; [p]rinted by J[ohn] H[aviland] for William Lee […], →OCLC:",
          "text": "In this instance, there is, upon the by, to be noted, the percolation or suing of the verjuice through the wood; for verjuice of itself would never have passed through the wood: so as, it seemeth, it must be first in a kind of vapour, before it pass.",
          "type": "quote"
        }
      ],
      "glosses": [
        "by the by; incidentally"
      ],
      "id": "en-upon_the_by-en-prep_phrase-lIJ6Lw48",
      "links": [
        [
          "by the by",
          "by the by"
        ],
        [
          "incidentally",
          "incidentally"
        ]
      ],
      "raw_glosses": [
        "(obsolete) by the by; incidentally"
      ],
      "tags": [
        "obsolete"
      ]
    }
  ],
  "word": "upon the by"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase",
        "head": ""
      },
      "expansion": "upon the by",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "upon the by",
      "name": "en-prep phrase"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with obsolete senses",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1627 (indicated as 1626), Francis [Bacon], “(please specify the page, or |century=I to X)”, in Sylua Syluarum: Or A Naturall Historie. In Ten Centuries. […], London: […] William Rawley […]; [p]rinted by J[ohn] H[aviland] for William Lee […], →OCLC:",
          "text": "In this instance, there is, upon the by, to be noted, the percolation or suing of the verjuice through the wood; for verjuice of itself would never have passed through the wood: so as, it seemeth, it must be first in a kind of vapour, before it pass.",
          "type": "quote"
        }
      ],
      "glosses": [
        "by the by; incidentally"
      ],
      "links": [
        [
          "by the by",
          "by the by"
        ],
        [
          "incidentally",
          "incidentally"
        ]
      ],
      "raw_glosses": [
        "(obsolete) by the by; incidentally"
      ],
      "tags": [
        "obsolete"
      ]
    }
  ],
  "word": "upon the by"
}